【答案】—Feel free ________ me if you have any problem. —That's very kind of you.

—Feel free ________ me if you have any problem. —That's very kind of you.

A. ask B. asks C. to ask D. asking

【答案】

C

【解析】

句意：——如果你有任何问题，随便问我。——你真太好了。根据feel free to do sth随便做某事，不定式做状语；故选C