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

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

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

He will behave(crazy)（）if he drinks too much.

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