Question

【题目】You _____ something great, otherwise you wouldn't have got the promotion.

A. should do B. must do

C. should have done D. must have done

Answer 1

【答案】D

【解析】

考查情态动词+have done。句意：你一定做了什么了不起的事，否则你就得不到提升。must have done表示对过去事情有把握的肯定推测，故选D。