25．I was made to write a letter in English, but I don't know ______.

A． what to write about

B． how to begin with

C． how to write about

D． what to begin

24．----Have you had any letters from him?

----No, I haven't, but my wife____ him regularly.

A． has heard from

B．has been hearing from

C．had heard from

D． had been hearing from

23．It____ that pleasant music keeps people from becoming tired at their work.

A．finds

B．has found

C．was found

D．has been found

22． He was not praised. ____, he was scolded.

A．Otherwise

B．Therefore

C．Instead

D．As a result