I don't know who on（）stole the diamond last night.

He（）for military service against the wishes of his parents.

The survivors（）to a floating tree in hopes of rescue.

Our department（）courses in several foreign languages.

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.

An explosion is a sudden increase in amount（）

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

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

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