Question

【题目】---Excuse me, may I keep the book a little longer?

---Sorry. You ________ return it today.

A. must B. mustn't C. can D. can't

Answer 1

【答案】A

【解析】试题分析：句意：—对不起，请问这本书我可以多看一段时间吗？—很抱歉。今天你必须还。A. must必须；B. mustn't禁止；C. can能、会；D. can't不能。句意和词意结合可知，选A。