Mr. Edward was not in, so his brother acted as （）at the party.

Our department（）courses in several foreign languages.

I could not persuade him to accept it,（）make him see the importance of it.

Inquiries（）the condition of the patients may be made personally or by telephone.

He will behave(crazy)（）if he drinks too much.

An explosion is a sudden increase in amount（）

I don't know who on（）stole the diamond last night.

I tried very hard to persuade him to join our group but I met with a flat（）

Nobody knows how long and how seriously the shakiness（不穩(wěn)定） of big businesses will （） down the economy.

We forgave her anger because we knew that her father's illness had put her under great （）