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

In China,it is quite (nature)（） for people to go back home for the Spring Festival.

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

I just managed to（）a quick breath before I was pulled under the water by the passing boats.

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

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

She is very nice, but because she has a（）way of speaking, she is slow in making friends

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

The aircraft vanished without（）

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