Mr Bush is on time for everything. How it be that he was late for the opening ceremony?.A.

问题补充：

Mr Bush is on time for everything. How it be that he was late for the opening ceremony?.

A. can

B. should

C. may

D. must

答案：

(答案→)A. can

B. should

C. may

D. must

解析：考查情态动词，can 能，会，should 应该，may可能，must 必须，句意：布什先生一切都很按时，他怎么会开幕式迟到呢？故选A。