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

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

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

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.