I.单项选择:从A、B、C、D四个选项中,选出可以填入空白处的正确答案。1.Are you__ the 100-metre race today? A.on B.to C.for D.in2.I’m afraid you didn’t do your homework__ A.careful enough B.carefully enough C.enough careful D.enough carefully3.They__a class meeting last Friday. A.hold B.held C.take D.took4.__Jack came a moment__ . -Why did he come__? A.late;later B.late;late C.later;late D.later;later I. Single Choice: From the four options A, B, C, and D, select the correct answer that can be filled in the blank. A.on B.to C.for D.in2.I’m afraid you didn’t do your homework__ careful3.They__a class meeting last Friday. A.hold B.held C.take D.took4.__Jack came a moment__ . -Why did he come__? A.late;later B.late;late C.later;late D.later ;later