----Willyouanswerthetelephone?It

問題詳情：

 ---- Will you answer the telephone? It ________ be your mother.

---- Sorry, I _______. I’m very busy.              A. can, mustn’t         B. will, can’t         C. may, can’t     D. need, will

【回答】

C

知識點：情態動詞

題型：選擇題