— It’s hard to believe that Jack have fought with the policeman.— Yes. If one ask for tr

问题补充：

— It’s hard to believe that Jack have fought with the policeman.

— Yes. If one ask for trouble, it can’t be helped.

A. would; will

B. should; must

C. must; may

D. need; dare

答案：

A. would; will

(答案→)B. should; must

C. must; may

D. need; dare

解析：考查情态动词完成时和情态动词，must + have done：用于肯定句，表示推测，意为“一定(已经)……”；should [ought to] + have done：可用于肯定句、否定句或疑问句，表示责备或遗憾等，意为“本来应该……”；need + have done：用于否定句或疑问句，用于否定时意为“本来不必”，用于疑问句时意为“有必要……吗”； may + have done：用于肯定句或否定句，表示推测，意为“可能(已经)……”。 must:十分确定的推测 will: 构成将来时 should:表示允诺，义务等意 dare表示敢于做某事，所以选B