Question

This cake is very sweet. You _________ a lot of sugar in it.  

A. should put           B. could have put       C. might put               D. must have put

Answer 1

D

解析:

前文說“蛋糕很甜”，下文的語境顯然應(yīng)該是“你一定是在里面放了很多糖”，故用“must+完成式”表示對過去情況的肯定推測。