---Couldyoupleasecometothemuseumwithmethisafternoon?---...

问题详情：

---Could you please come to the museum with me this afternoon?

---Sorry, I ______ . I have to take a piano lesson at 2 pm.

A. couldn’t         B. mustn’t          C. can’t        D. needn’t

【回答】

C

知识点：情态动词

题型：选择题