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一、情态动词基本含义的考查
情态动词的基本含义，一直是高考考查的重要内容。例如：
1. The fire spread through the hotel very quickly but everyone______get out. (NMET 1997,24)
A. had to B. wouldC. was able to D. could
解析：考查情态动词的基本含义。had to：不得不； would：表示意愿或过去常常；could倾向于表示经过长期训练而获得的能力；was able to 表示经过努力而能够做到的事或成功地做了某事。因此，答案是C。
2. When can I come for the photos? I need them tomorrow afternoon.
—They______be ready by 12:00. （NMET 1998,13)
A. can B. should C. might D. need
解析：can：能够；should:应该，表示责任、义务。Might：可能；need：需要。它们应该在12点前准备好。所以，答案是B。
3. You can’t imagine that a well-behaved gentleman______be so rude to a lady . (2001 年上海，34)
A. might B. need C. shouldD. would
解析：should 表示说话人感情，如惊奇、愤怒、失望等。在此句中表示说话人一种惊奇的语气。 句意为：你不可能想象出以卫星为体面的绅士竟然对一位女士那么粗鲁。答案是 C。
4.It has been announced that candidates______remain in their seats until all the papers have been collected. （2002年上海，27）
A. canB. willC. mayD. shall
解析：shall：应、可、必须，表示说话人的意图，含允诺、决心、警告、命令、恫吓等意思，用于陈述句中的第二、三人称。答案是D。
5.A left-luggage office is a place where bags______be left for a short time ,especially at a railway station. (NMET 2003, 28)
A. shouldB. canC. mustD. will
解析：should: 应该；can：可以；must：必须；will：愿意。句意为：行李寄存处是人们可以暂时存放包裹的地方，特别是在火车站。所以，答案是：B。
6.“The interest______be divided into five parts, according to the agreement madeby both sides,” declared the judge. (NMET 2004年重庆， 24)
A. may B. shouldC. mustD. shall
解析：shall用在陈述语气中，主语是第二、三人称，表示说话人的意图，含允诺、决心、警告、命令、恫吓等意，此题指法官的宣判，用shall更合适，should 应该，语气不如shall强烈。答案是：D。
7.Excuse me, but I want to use your computer to type a report.
—You______have my computer if you don’t take care of it . (NMET2004年湖南，28)
A. shan’tB. might not C. needn’t D. shouldn’t
解析：同上题的解释，句意为：如果你不爱护，就不能使用我的计算机。答案是：A。
8.I don’t mind telling you what I know .
—You______. I’m not asking you for it .(NMET 2004 年江苏，22)
A. mustn’tB. may notC. can’tD. needn’t
解析：mustn’t：一定不； may not：可能不；can’t：不可能；needn’t：不必要。根据所提供的情境I’m not asking for it, 可判定没有必要告诉对方。答案是：D。
9.Mum, I’ve been studying English since 8 o’clock.______I go out and play with Tom for a while?
—No, I’m afraid not. Besides, it’s raining outside now. (NMET 2004年辽宁， 29)
A. Can’tB. Wouldn’t C. May notD. Won’t
解析：can ：可以，表示许可，在口语中和may 意思相近，但一般疑问句可用缩略式can’t, 不宜用may not . 答案是：A。
10.Children under 12 years of age in that country______be under adult supervision when in a public library. (2004年上海， 28)
A.must B.mayC.canD.need
解析：must :必须;may ：可以；can：能够；need ：需要。句意为：那个国家12岁以下的孩子在公共图书馆必须受到成人的监护。答案是：A。
11. I often see lights in that empty house. Do you think I______report it to the police? (NMET2004年全国卷I，21)
A. should B. may C. will D. can
解析：should：应该，表示征求对方意见。因为常看见空房内有灯光，所以征求意见是否应该报告警察。答案是：A。
12. How’s your tour around the North Lake? Is it beautiful?
—It______be, but it is now heavily polluted.(NMET 2007 全国卷I,27)
A. willB. would C. should D. must
解析：will:会，将; would 表示过去将来；用于交际用语表示委婉语气；用在虚拟语境下；should：应该，竟然：must:必须。句意：——你的北湖之游如何？北湖很美吗？——应该是的，不过现在它被严重污染。答案是：C。
分析：高考对情态动词基本含义的考查，仍然集中在常用的情态动词上。对常用情态动词的含义，要掌握的既准确又要全面，特别是shall, should, can, may 四个常用情态动词的含义较多，不易理解，复习时应当引起重视。
二、情态动词表示推测的考查
对情态动词表示推测的用法，是高考考查情态动词的一个重要方面。例如：
1. Sorry, I’m late. I______have turned off the alarm clock and gone back to sleep again . (NMET 2000春季北京， 20)
A. might B. should C. can D. will
解析：might have done : (过去)可能做过某事；shouldhave done :本应该做某事。根据本句提供的情境I’m late 表明说话人可能把闹钟关上了。答案是：A。
2. My sister met him at the Grand Theatre yesterday afternoon,so he______your lecture. (2000 年上海，23)
A. couldn’t have attended B. needn’t have attended
C. mustn’t have attendedD. shouldn’t have attended
解析：couldn’t have done: (过去)不可能做某事； needn’t have done:本来不必做某事；mustn’t have done:一定未做过某事： shouldn’t have done:本不该做某事。根据提供的情境My sister met him at the Great Theatre表明他不可能参加讲座。答案是：A。
3.Mr Bush is on time for everything. How______it be that he was late for the opening ceremony?（2001年春季上海，23）
A. canB. shouldC. mayD. must
解析：can表示可能性。布什先生按时做一切事，他怎么可能开幕式迟到呢？答案是：A。
4.I heard they went skiing in the mountains last winter?
—It______true because there was little snow there. (NMET 2002 年北京， 31)
A. may not beB. won’t be
C. couldn’t beD. mustn’t be
解析：may not be : 可能不是；won’t be：不会是；couldn’t be：不可能是； mustn’t be ：一定不是。根据提供情境there was little snow 说明山里滑雪是件不可能的事，may not 语气不如couldn’t强。答案是：C。
5.Is John coming by train ?
—He should, but he______not .He likes driving his car.(NMET 2002,25)
A. mustB. can C. need D. may
解析：根据提供的情境he likes driving his car，他可能不坐火车来;can not:不可能，语气太强。所以应选：D。
6.My English-Chinese dictionary has disappeared . Who______have taken it?(2003年春季上海，24)
A. shouldB. must C. couldD. would
解析：could have done 表示对过去情况的推断，“可能是谁把它拿走了”。答案是：C。
7.You might just as well tell the manufacturer that male customers______not like the design of the furniture. (2004 年春季上海29)
A. must B. shallC. mayD. need
解析：may：可能，表示猜测。 由主句中might可判断男顾客可能不喜欢家具的设计是一种猜测。答案是： C。
8.You______be tired ——you’ve only been working for an hour. (NMET2004 年全国卷III 29)
A. must not B. won’t C. can’t D. may not
解析：must not:一定不；won’t：不会；can’t：不可能；may not：可能不。根据提供的情境“仅仅工作了一个小时”，所以用can’t be tired 表示推断，不可能累。答案是：C。
9.Tom graduated from college at a very young age.
—Oh, he______have been a very smart boy then. (NMET2004年全国卷IV ，22)
A. could B. should C. mightD. must
解析：由前一句可判断，Tom过去肯定是个很聪明的孩子。答案是:D。
10. There’s no light on.
—They ________be at home .（NMET2006 全国卷I，24）
A. can’t B. mustn’t C. needn’t D. shouldn’t
解析:can’t：不可能 ；mustn’t：一定没，不表示推测; needn’t :不必要，不表示推测；shouldn’t：不应该，语气比can’t弱。句意为：没有亮灯——他们不可能在家。答案是：A。
分析：高考对表示推测的情态动词集中在must, can, could, may, might上，准确掌握它们使用的场合，是解决问题的关键。Must 用于肯定陈述句，表示肯定推测；can, could用于疑问或否定陈述句，表示可能性推测；may, might用于陈述句，表示可能性推测；用于否定陈述句中，can’t （不可能）的语气比may not（可能不）强。此外，还要注意有对过去和对现在两种情况的推测,对过去推测用情态动词+have done ，对现在推测用情态动词+ 动词原形。
三、情态动词表示虚拟的考查
情态动词＋have+过去分词表示与过去事实上相反的情况，也是高考单项选择题涉及到情态动词的一个重要方面。
1. There was a lot of fun at yesterday’s party. You______come, but why didn’t you?(1999年上海， 14)
A. must have B. should
C. need have D. ought to have
解析：ought to have done 表示本来应该做某事而实际没做，should do 表示现在应该做某事，与题中 at yesterday’s party 表示的时间不一致。所以选D。
2.I was really anxious about you. You______home without a word.(NMET2001,33)
A. mustn’t leaveB. shouldn’t have left
C. couldn’t have leftD. needn’t leave
解析：shouldn’t have done 表示本来不应该做而实际上做了。句意为：你不应该不说一句话就离开家，而实际上是没说一句话就离开家了。答案是：B。
3.Oh, I’m not feeling well in the stomach. I______so much fried chicken just now.(2002年春季上海，28)
A. shouldn’t eat B. mustn’t have eaten
C. shouldn’t have eaten D. mustn’t eat
解析：该句所表达的意思是刚才我不因该吃那么多炸鸡，而实际上是吃了那么多，可以判断用shouldn’t have eaten. 答案是 C。
4.I’ll tell Mary about her new job tomorrow.
—You______her last week.（NMET2004年福建，32）
A. ought to tell B. would have told
C. must tellD. should have told
解析：根据句意你本应该上周告诉她，而实际上你明天才告诉，有埋怨之意.应用should have told.答案为D。
5.Mr White______at 8:30 for the meeting ,but he didn’t show up. （NMET2004年全国卷I，27）
A. should have arrived B. should arrive
C. should have had arrivedC. should be arriving
解析：据提供的语境but he didn’t show up说明他本来应该在8:30来开会，而实际上没来，可判断用should have arrived .答案是：A。
分析：高考对情态动词表示虚拟的用法，表示与过去事实相反的情况。近几年高考，主要侧重should （not）have done 这一句式上，表示本来不该做却做了或本来该做却未做的事，在复习时，还应关注其它几种虚拟形式，如need (not)have done 表示本来需要做而未做或本来不需要而做的事等等，以做到有备无患。
高考命题趋向：近十年高考试题，对情态动词的考查涉及到基本含义、表示推测、表示虚拟这三个方面，考查的比较全面，突出的一点是重视在具体语境下的灵活使用。情态动词和助动词都帮助实义动词构成谓语，近两年又趋向于情态动词与助动词混合考查，增大了此类试题的难度，这一点应引起广大考生注意。例如：
1.Tom ,you didn’t come to the party last night?
—I______, but I suddenly remembered I had homework to do .(NMET2007全国卷II，20)
A. had to B. didn’tC. was going to D. wouldn’t
解析：had to:不得不；didn’t:没来；was going to：打算来；wouldn’t:不愿来。句意：——汤姆，昨晚你没来参加舞会吗？——我本打算来，但我突然记起有作业要做。But是关键词，所以答案是：C。
2.Your phone number again? I______quite catch it .
—It’s86184867.
A. didn’t B. couldn’t C. don’t D. can’t
解析：记住电话号码并非难事，未完全听清楚电话号码并非能力的事，此处只是说没有完全听清楚电话号码，所以，应选A。
即学即练：
1.John has made a great progress in English. He______very hard recently.
A. must be B. may work
C. must have worked D. can have worked
2.I______so hard for my exams, for they were much easier than I expected to be .
A. shouldn’t have workedB. must have studied
C. needn’t have worked D. can’t have worked
3.Bob______the money from the manager’s office ,for he didn’t enter her office on the day it was stolen.
A. needn’t have stolenB. might have taken
C. must have takenD. can’t have stolen
4.I meant to drop in on you that day ,but your dog simply______not let me come through the gate .
A. would B. couldC. mightD. should
5.The construction of the building______before the end of this month .
A. must have been completed
B. should have been completed
C. must be competed
D. must complete
6.He hasn’t appeared yet. What______?
A. can happenB. can have happened
C. should have happened D. should happen
7. “If you are admitted to a university, John ,”said his father , “you______have a new computer.”
A. are going to B. shall C. wouldD. need
8.—You didn’t hear me until now?
—No, I______soundly when you came in .
A. must be sleepingB. must have been sleeping
C. must have sleptD. must sleep
9. —Write to me when you get there.
—I______.
A. canB. may C. will D. shall
10. John, look at the time.______you play the piano at such a late hour ? (2005 全国卷)
A. Must B. CanC. May D. Need
Key: 1-5CCDAC6-10BBBCA
情态动词的基本含义，一直是高考考查的重要内容。例如：
1. The fire spread through the hotel very quickly but everyone______get out. (NMET 1997,24)
A. had to B. wouldC. was able to D. could
解析：考查情态动词的基本含义。had to：不得不； would：表示意愿或过去常常；could倾向于表示经过长期训练而获得的能力；was able to 表示经过努力而能够做到的事或成功地做了某事。因此，答案是C。
2. When can I come for the photos? I need them tomorrow afternoon.
—They______be ready by 12:00. （NMET 1998,13)
A. can B. should C. might D. need
解析：can：能够；should:应该，表示责任、义务。Might：可能；need：需要。它们应该在12点前准备好。所以，答案是B。
3. You can’t imagine that a well-behaved gentleman______be so rude to a lady . (2001 年上海，34)
A. might B. need C. shouldD. would
解析：should 表示说话人感情，如惊奇、愤怒、失望等。在此句中表示说话人一种惊奇的语气。 句意为：你不可能想象出以卫星为体面的绅士竟然对一位女士那么粗鲁。答案是 C。
4.It has been announced that candidates______remain in their seats until all the papers have been collected. （2002年上海，27）
A. canB. willC. mayD. shall
解析：shall：应、可、必须，表示说话人的意图，含允诺、决心、警告、命令、恫吓等意思，用于陈述句中的第二、三人称。答案是D。
5.A left-luggage office is a place where bags______be left for a short time ,especially at a railway station. (NMET 2003, 28)
A. shouldB. canC. mustD. will
解析：should: 应该；can：可以；must：必须；will：愿意。句意为：行李寄存处是人们可以暂时存放包裹的地方，特别是在火车站。所以，答案是：B。
6.“The interest______be divided into five parts, according to the agreement madeby both sides,” declared the judge. (NMET 2004年重庆， 24)
A. may B. shouldC. mustD. shall
解析：shall用在陈述语气中，主语是第二、三人称，表示说话人的意图，含允诺、决心、警告、命令、恫吓等意，此题指法官的宣判，用shall更合适，should 应该，语气不如shall强烈。答案是：D。
7.Excuse me, but I want to use your computer to type a report.
—You______have my computer if you don’t take care of it . (NMET2004年湖南，28)
A. shan’tB. might not C. needn’t D. shouldn’t
解析：同上题的解释，句意为：如果你不爱护，就不能使用我的计算机。答案是：A。
8.I don’t mind telling you what I know .
—You______. I’m not asking you for it .(NMET 2004 年江苏，22)
A. mustn’tB. may notC. can’tD. needn’t
解析：mustn’t：一定不； may not：可能不；can’t：不可能；needn’t：不必要。根据所提供的情境I’m not asking for it, 可判定没有必要告诉对方。答案是：D。
9.Mum, I’ve been studying English since 8 o’clock.______I go out and play with Tom for a while?
—No, I’m afraid not. Besides, it’s raining outside now. (NMET 2004年辽宁， 29)
A. Can’tB. Wouldn’t C. May notD. Won’t
解析：can ：可以，表示许可，在口语中和may 意思相近，但一般疑问句可用缩略式can’t, 不宜用may not . 答案是：A。
10.Children under 12 years of age in that country______be under adult supervision when in a public library. (2004年上海， 28)
A.must B.mayC.canD.need
解析：must :必须;may ：可以；can：能够；need ：需要。句意为：那个国家12岁以下的孩子在公共图书馆必须受到成人的监护。答案是：A。
11. I often see lights in that empty house. Do you think I______report it to the police? (NMET2004年全国卷I，21)
A. should B. may C. will D. can
解析：should：应该，表示征求对方意见。因为常看见空房内有灯光，所以征求意见是否应该报告警察。答案是：A。
12. How’s your tour around the North Lake? Is it beautiful?
—It______be, but it is now heavily polluted.(NMET 2007 全国卷I,27)
A. willB. would C. should D. must
解析：will:会，将; would 表示过去将来；用于交际用语表示委婉语气；用在虚拟语境下；should：应该，竟然：must:必须。句意：——你的北湖之游如何？北湖很美吗？——应该是的，不过现在它被严重污染。答案是：C。
分析：高考对情态动词基本含义的考查，仍然集中在常用的情态动词上。对常用情态动词的含义，要掌握的既准确又要全面，特别是shall, should, can, may 四个常用情态动词的含义较多，不易理解，复习时应当引起重视。
二、情态动词表示推测的考查
对情态动词表示推测的用法，是高考考查情态动词的一个重要方面。例如：
1. Sorry, I’m late. I______have turned off the alarm clock and gone back to sleep again . (NMET 2000春季北京， 20)
A. might B. should C. can D. will
解析：might have done : (过去)可能做过某事；shouldhave done :本应该做某事。根据本句提供的情境I’m late 表明说话人可能把闹钟关上了。答案是：A。
2. My sister met him at the Grand Theatre yesterday afternoon,so he______your lecture. (2000 年上海，23)
A. couldn’t have attended B. needn’t have attended
C. mustn’t have attendedD. shouldn’t have attended
解析：couldn’t have done: (过去)不可能做某事； needn’t have done:本来不必做某事；mustn’t have done:一定未做过某事： shouldn’t have done:本不该做某事。根据提供的情境My sister met him at the Great Theatre表明他不可能参加讲座。答案是：A。
3.Mr Bush is on time for everything. How______it be that he was late for the opening ceremony?（2001年春季上海，23）
A. canB. shouldC. mayD. must
解析：can表示可能性。布什先生按时做一切事，他怎么可能开幕式迟到呢？答案是：A。
4.I heard they went skiing in the mountains last winter?
—It______true because there was little snow there. (NMET 2002 年北京， 31)
A. may not beB. won’t be
C. couldn’t beD. mustn’t be
解析：may not be : 可能不是；won’t be：不会是；couldn’t be：不可能是； mustn’t be ：一定不是。根据提供情境there was little snow 说明山里滑雪是件不可能的事，may not 语气不如couldn’t强。答案是：C。
5.Is John coming by train ?
—He should, but he______not .He likes driving his car.(NMET 2002,25)
A. mustB. can C. need D. may
解析：根据提供的情境he likes driving his car，他可能不坐火车来;can not:不可能，语气太强。所以应选：D。
6.My English-Chinese dictionary has disappeared . Who______have taken it?(2003年春季上海，24)
A. shouldB. must C. couldD. would
解析：could have done 表示对过去情况的推断，“可能是谁把它拿走了”。答案是：C。
7.You might just as well tell the manufacturer that male customers______not like the design of the furniture. (2004 年春季上海29)
A. must B. shallC. mayD. need
解析：may：可能，表示猜测。 由主句中might可判断男顾客可能不喜欢家具的设计是一种猜测。答案是： C。
8.You______be tired ——you’ve only been working for an hour. (NMET2004 年全国卷III 29)
A. must not B. won’t C. can’t D. may not
解析：must not:一定不；won’t：不会；can’t：不可能；may not：可能不。根据提供的情境“仅仅工作了一个小时”，所以用can’t be tired 表示推断，不可能累。答案是：C。
9.Tom graduated from college at a very young age.
—Oh, he______have been a very smart boy then. (NMET2004年全国卷IV ，22)
A. could B. should C. mightD. must
解析：由前一句可判断，Tom过去肯定是个很聪明的孩子。答案是:D。
10. There’s no light on.
—They ________be at home .（NMET2006 全国卷I，24）
A. can’t B. mustn’t C. needn’t D. shouldn’t
解析:can’t：不可能 ；mustn’t：一定没，不表示推测; needn’t :不必要，不表示推测；shouldn’t：不应该，语气比can’t弱。句意为：没有亮灯——他们不可能在家。答案是：A。
分析：高考对表示推测的情态动词集中在must, can, could, may, might上，准确掌握它们使用的场合，是解决问题的关键。Must 用于肯定陈述句，表示肯定推测；can, could用于疑问或否定陈述句，表示可能性推测；may, might用于陈述句，表示可能性推测；用于否定陈述句中，can’t （不可能）的语气比may not（可能不）强。此外，还要注意有对过去和对现在两种情况的推测,对过去推测用情态动词+have done ，对现在推测用情态动词+ 动词原形。
三、情态动词表示虚拟的考查
情态动词＋have+过去分词表示与过去事实上相反的情况，也是高考单项选择题涉及到情态动词的一个重要方面。
1. There was a lot of fun at yesterday’s party. You______come, but why didn’t you?(1999年上海， 14)
A. must have B. should
C. need have D. ought to have
解析：ought to have done 表示本来应该做某事而实际没做，should do 表示现在应该做某事，与题中 at yesterday’s party 表示的时间不一致。所以选D。
2.I was really anxious about you. You______home without a word.(NMET2001,33)
A. mustn’t leaveB. shouldn’t have left
C. couldn’t have leftD. needn’t leave
解析：shouldn’t have done 表示本来不应该做而实际上做了。句意为：你不应该不说一句话就离开家，而实际上是没说一句话就离开家了。答案是：B。
3.Oh, I’m not feeling well in the stomach. I______so much fried chicken just now.(2002年春季上海，28)
A. shouldn’t eat B. mustn’t have eaten
C. shouldn’t have eaten D. mustn’t eat
解析：该句所表达的意思是刚才我不因该吃那么多炸鸡，而实际上是吃了那么多，可以判断用shouldn’t have eaten. 答案是 C。
4.I’ll tell Mary about her new job tomorrow.
—You______her last week.（NMET2004年福建，32）
A. ought to tell B. would have told
C. must tellD. should have told
解析：根据句意你本应该上周告诉她，而实际上你明天才告诉，有埋怨之意.应用should have told.答案为D。
5.Mr White______at 8:30 for the meeting ,but he didn’t show up. （NMET2004年全国卷I，27）
A. should have arrived B. should arrive
C. should have had arrivedC. should be arriving
解析：据提供的语境but he didn’t show up说明他本来应该在8:30来开会，而实际上没来，可判断用should have arrived .答案是：A。
分析：高考对情态动词表示虚拟的用法，表示与过去事实相反的情况。近几年高考，主要侧重should （not）have done 这一句式上，表示本来不该做却做了或本来该做却未做的事，在复习时，还应关注其它几种虚拟形式，如need (not)have done 表示本来需要做而未做或本来不需要而做的事等等，以做到有备无患。
高考命题趋向：近十年高考试题，对情态动词的考查涉及到基本含义、表示推测、表示虚拟这三个方面，考查的比较全面，突出的一点是重视在具体语境下的灵活使用。情态动词和助动词都帮助实义动词构成谓语，近两年又趋向于情态动词与助动词混合考查，增大了此类试题的难度，这一点应引起广大考生注意。例如：
1.Tom ,you didn’t come to the party last night?
—I______, but I suddenly remembered I had homework to do .(NMET2007全国卷II，20)
A. had to B. didn’tC. was going to D. wouldn’t
解析：had to:不得不；didn’t:没来；was going to：打算来；wouldn’t:不愿来。句意：——汤姆，昨晚你没来参加舞会吗？——我本打算来，但我突然记起有作业要做。But是关键词，所以答案是：C。
2.Your phone number again? I______quite catch it .
—It’s86184867.
A. didn’t B. couldn’t C. don’t D. can’t
解析：记住电话号码并非难事，未完全听清楚电话号码并非能力的事，此处只是说没有完全听清楚电话号码，所以，应选A。
即学即练：
1.John has made a great progress in English. He______very hard recently.
A. must be B. may work
C. must have worked D. can have worked
2.I______so hard for my exams, for they were much easier than I expected to be .
A. shouldn’t have workedB. must have studied
C. needn’t have worked D. can’t have worked
3.Bob______the money from the manager’s office ,for he didn’t enter her office on the day it was stolen.
A. needn’t have stolenB. might have taken
C. must have takenD. can’t have stolen
4.I meant to drop in on you that day ,but your dog simply______not let me come through the gate .
A. would B. couldC. mightD. should
5.The construction of the building______before the end of this month .
A. must have been completed
B. should have been completed
C. must be competed
D. must complete
6.He hasn’t appeared yet. What______?
A. can happenB. can have happened
C. should have happened D. should happen
7. “If you are admitted to a university, John ,”said his father , “you______have a new computer.”
A. are going to B. shall C. wouldD. need
8.—You didn’t hear me until now?
—No, I______soundly when you came in .
A. must be sleepingB. must have been sleeping
C. must have sleptD. must sleep
9. —Write to me when you get there.
—I______.
A. canB. may C. will D. shall
10. John, look at the time.______you play the piano at such a late hour ? (2005 全国卷)
A. Must B. CanC. May D. Need
Key: 1-5CCDAC6-10BBBCA