Question

【题目】—Look at that girl! Is it Susan?

—No, it _____ be her. She has gone back to her hometown.

A. mustn’t B. can’t C. needn’t

Answer 1

【答案】B

【解析】句意：——看那个女孩!是苏珊吗？——不，不可能是她，她已经回家乡了。A. mustn't禁止；B. can't不能，不可能；C. needn't不必。根据She has gone back to her hometown她已经回家乡了，所以不可能是她，表示一种推测，故答案选B。