— Guess what! I have got A for my term paper.— Great! You read widely and put a lot of wo

问题补充：

— Guess what! I have got A for my term paper.

— Great! You read widely and put a lot of work into it.

A. must

B. should

C. must have

D. should have

答案：

A. must

B. should

(答案→)C. must have

D. should have

解析：考查情态动词。根据语境，你一定阅读广泛是过去发生的事情，故用情态动词+have done的结构。must have done过去一定做过某事; should have done本应当做某事。故选C。