Question

【题目】— 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 D. mustn't; borrow

Answer 1

【答案】C

【解析】must回答与延续性动词的用法。Must开头的一般疑问句的否定回答用“……needn’t”, 由答语for短语指一段时间，故用延续性动词，borrow为短暂性动词，要换成延续性动词keep。