I tried very hard to persuade him to join our group but I met with a flat（）

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

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.

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

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

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

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

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

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