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

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

Many students found the book （）;it provided them with a large amount of information on the subject.

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

Our department（）courses in several foreign languages.

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

An explosion is a sudden increase in amount（）

People appreciate（）with him because he has a good sense of humor.

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

The price they offered for my old car was so low that I（）it down.