Our department（）courses in several foreign languages.

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

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

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

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

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

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

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

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

Shall we request the chairman（）our suggestion again?