The book I bought from the bookstore isn’t here. Who ?A. could have taken itB. must have t

问题补充：

The book I bought from the bookstore isn’t here. Who ?

A. could have taken it

B. must have taken it

C. might take it

D. should take it.

答案：

(答案→)A. could have taken it

B. must have taken it

C. might take it

D. should take it.

解析：主要测试虚拟语气。有语境可知译文如下：我从书店借的书不见了。谁可能会拿走它呢？句子应该属于对过去的推测，另外还要符合疑问句中的要求。