– Is John coming by train?– He should but he not. He likes driving his car.A. mustB. can

问题补充：

– Is John coming by train?

– He should, but he not. He likes driving his car.

A. must

B. can

C. need

D. may

答案：

A. must

B. can

C. need

(答案→)D. may

解析：考查情态动词。根据句意：——约翰乘火车来的吗？——他应当，但他也许没有，他喜欢开车。选D。