问题补充:
- You look worried. Whats the matter?
- I have some problems with my parents. I really don know.
A. who to speak
B. who speaks to
C. who to speak to
D. who speaking to
答案:
A. who to speak
B. who speaks to
(答案→)C. who to speak to
D. who speaking to
解析:句意:你看起来很忧虑,怎么了?我和父母有些问题,我不知道该和谁说。句中所缺的部分是宾语从句,由疑问词who引导,疑问词后用不定式,故选C。