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

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：考查虚拟语气。句意：你猜怎么着!我的学期论文得了个A。——太棒了！你一定做了广发的阅读并投入了大量的工作。本句中read为过去分词，“must+have+done”表示对过去事情的肯定推测，译成“一定做过某事”，故选C。