Question

【题目】—Are those your grandparents? —Yes，________.

A. these are B. they're C. they are D. those are

Answer 1

【答案】C

【解析】句意：——那些是你的祖父母吗？——是的，他们是。代指those用代词they，根据Yes可知此处用肯定回答，故为they are。故选C。