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

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

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

The aircraft vanished without（）

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

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

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

An explosion is a sudden increase in amount（）

I was（）than angry when I saw how they'd ruined the landscape.

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