— Will your brother stay home tonight?— I’m not quite sure. He to the cinema tonight.A.

问题补充：

— Will your brother stay home tonight?

— I’m not quite sure. He to the cinema tonight.

A. must go

B. can go

C. may go

D. may be going

答案：

A. must go

B. can go

(答案→)C. may go

D. may be going

解析：表示推测时，must比may语气肯定。