1. "Are you worried about your son being alone in a strange country?"" _________. I'm sure he'll manage fine"
A. By all means
B. Of course
C. Not in the least
D. No wonder
2. But for her mother's sudden illness, she would never think of breaking this _________with you.
3. Fluency in three languages _________her for work in the European Parliament.
4. According to the recent research, heavy coffee drinking and heart attack are not necessarily ____ an effect．
5. Jim is one of the most popular ________ in my company.