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

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

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

Some say yes and others say no; I don't know （）to follow.

（）students often find it difficult to live in China at first.

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

Mr. Sanders has been asked to（）the next meeting of the committee.

Shall we request the chairman（）our suggestion again?

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

The aircraft vanished without（）