—Whatdoyouthinkpeoplecandofortheiragedparents?   —They

问题详情：

—What do you think people can do for their aged parents?

    —They_________ do anything except to be with them and be themselves.

    A. don’t have to       B. oughtn’t to            C. mustn’t          D. can’t

【回答】

A

知识点：情态动词

题型：选择题