Question

【题目】—Listen! Someone is playing the guitar in our classroom. Who is it?

—It ________ be John. He is the only student who can play it.

A. can’t B. must C. might

Answer 1

【答案】B

【解析】

句意 ：——听！有人在我们教室里弹吉他。是谁？——它一定是约翰。他是唯一一个会弹吉他的学生。A. can’t不能；B. must必须，一定；C. might可能。根据题意，故选B。