It is obvious __________ he has no chance to go to college.
A. that  B. whether  C what  D. Which

I don't want to cooperate with _________ is different from me in character.

_________the peace talk between the two countries will break down depends on  your attitude.

It was __________ you had done ________made it possible for you to improve  your English.                                

You'd better not leave the medicine __          kids can get at it．

A．even if

B．which

C．where

D．so that

—What do you think of the new English teacher?
—___she is an elegant lady, she can be extremely difficult to work with．

The whole family were worried about Jane because no one was aware ___she had gone．

Such a person _____ you talked about is seldom seen now.

This is the very information _______ we can learn what is selling best in the market. .

All _____ can be done has already been done.