1 . 选词填空

A. both of them       B. both of whom        C. of whom both       D. both of who

1. She has two sons, __________are college students.
2. She has two sons, and __________are college students.

2 . ＂Do you need those glasses for medical reasons？＂...Then he took________ off, gave a big smile and said,＂That is cool.＂