An explosion is a sudden increase in amount（）

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

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

Shall we request the chairman（）our suggestion again?

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

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

After she became a lawyer, she decided to （）criminal law.

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

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

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