问题 选择题

The elderly _________ good care of in public places like supermarkets and airports; they are likely to get lost.

A.can have been taken

B.ought to be taking

C.must be taken

D.should take

答案

答案:C

考查情态动词。句意:上了年纪的人必须在公共场合被很好的照顾,像超市和机场,他们很可能会迷路。故选C。

单项选择题
单项选择题