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

She is very nice, but because she has a（）way of speaking, she is slow in making friends

Shall we request the chairman（）our suggestion again?

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

An explosion is a sudden increase in amount（）

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

I want you to succeed without（）and firmly believe that you will succeed if you try hard enough.

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

The student's first attempt at writing a play was a far（）from the work of Shakespeare.

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