题目内容
4．-Must I return the book this week？-No，you ．You can it for 20 days．（ ）
| A． | mustn't，keep | B． | needn't，borrow | C． | needn't，keep |
分析 --这周我必须把这本书还回去吗？
--不，你不必．你可以保存二十天．
解答 答案：C．根据Must I return the book this week，可知这里考查了以must开头的问句，回答must引导的一般疑问句，肯定回答是Yes，you must．否定回答是No，you needn't．再根据for 20days，可知这里是一段时间，句子中的谓语动词应该用延续性的动词，所以本句要选延续性动词keep，lend和borrow都是非延续性动词．故选C．
点评 本题考查了情态动词的用法．解答时注意：回答must引导的一般疑问句，肯定回答是Yes，you must．否定回答是No，you needn't．
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