Question

【题目】On Double II, many people bought a lot of things they don't really need. They ________ crazy.

A. can beB. must beC. may beD. can't be

Answer 1

【答案】B

【解析】

句意：在DoubleII上，很多人买了很多他们不真正需要的东西。他们一定是疯了。A.可能是；B.必须是；C.可以是；D.不可能是。根据前句内容可知，他们是一定是疯了，此空是一定的意思，此空故填must be,故选B。