Question

Mary is a girl who _________ her mother, so if she goes abroad, she may feel homesick.

1. A.
   attaches to
2. B.
   is attached
3. C.
   is attached to
4. D.
   attach herself to

Answer 1

C
解析：
很显然本题中空格所在的定语从句表达的是“她依恋她妈妈”，由于是定语从句，且以关系代词who作主语，故从句中谓语动词应与girl一致，因此D项被排除，A、B两项表达不完整。