He pushed the door again and again but it open.A. may notB. can'tC. didn’tD. wouldn't

问题补充：

He pushed the door again and again, but it open.

A. may not

B. can

C. didn’t

D. wouldn

答案：

A. may not

B. can

C. didn’t

(答案→)D. wouldn

解析：it wouldn open 意思是:门就是打不开,wouldn 在此表“意愿”.