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

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

I want you to succeed without（）and firmly believe that you will succeed if you try hard enough.

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

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

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

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

She couldn't（）laughing at him in those clothes.

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

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