An explosion is a sudden increase in amount（）

I could not persuade him to accept it,（）make him see the importance of it.

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

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.

I expected a bigger payment, but I suppose you have to be（）for small mercies.

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

Since we can't hear you at the back of the hall, you'll have to（）your voice.

Our department（）courses in several foreign languages.

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