Since we can't hear you at the back of the hall, you'll have to（）your voice.

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

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

He（）for military service against the wishes of his parents.

An explosion is a sudden increase in amount（）

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

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

Shall we request the chairman（）our suggestion again?

She had clearly no（）of doing any work, although she was very well paid.

The survivors（）to a floating tree in hopes of rescue.