An explosion is a sudden increase in amount（）

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

The noise of the traffic（）Paul from his work.

The aircraft vanished without（）

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

After she became a lawyer, she decided to （）criminal law.

Inquiries（）the condition of the patients may be made personally or by telephone.

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

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

The weakening housing market continued to take its（）on the industry.