—Someonewillcometoourmusicclubtomorrow.Iguessit'sMary. ...

問題詳情：

—Someone will come to our music club tomorrow. I guess it's Mary.

 —It ________ be Mary. She left for England yesterday and will stay there for a week.

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

【回答】

C

知識點：情態動詞

題型：選擇題