Question

【题目】---- Where is my reference book? It was here a moment ago.

---- Someone ______it by mistake

A. could have taken B. must take

C. may take D. must have taken

Answer 1

【答案】D

【解析】

考查情态动词+have done。句意：---我的参考书呢？刚才还在这里。---一定是有人拿错了。由“It was here a moment ago”可知，表示的是对过去事实肯定的推测，所以用must have taken。故D选项正确。