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

The aircraft vanished without（）

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

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

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

An explosion is a sudden increase in amount（）

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

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

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

Many students found the book （）;it provided them with a large amount of information on the subject.