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

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.

Our department（）courses in several foreign languages.

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

People appreciate（）with him because he has a good sense of humor.

An explosion is a sudden increase in amount（）

Mr. Edward was not in, so his brother acted as （）at the party.

Many students found the book （）;it provided them with a large amount of information on the subject.

The survivors（）to a floating tree in hopes of rescue.