-Excuseme,mayIkeepthebookalittlelonger? -Sorry.You

問題詳情：

 - 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

【回答】

A

知識點：情態動詞

題型：選擇題