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Unit 5 A Miserable,Merry ChristmasLanguage Points: 1.make sure:设法确保;(把……)查明。例: (1)Ask for a receipt and make sure that you getit.要一张收据,而且一定要拿到手。 (2) I went round making sure that all the windowswere closed.我巡视了一遍,看看所有的窗户是否