Question

【题目】Lily and her parents work in No. 2 Middle School. They _______ Maths teachers.

A. all are B. are all C. both are D. are both

Answer 1

【答案】B

【解析】

试题分析：句意：莉莉和她的父母在第二中学工作。他们都是数学老师。all（表示三者或三者以上）都；both（表示两者或两者以上）都；根据Lily and her parents应是三个人，因此用代词all。both和all位于be动词之后，实义动词之前，故选B。