The student said there were a few points in the essay he _____ impossible to understand.
| A．had found | B．finds | C．has found | D．would find |
_______I know , the computer can never take the place of the human brain.
| A．As for | B．As long as | C．So far for | D．So /As far as |
I paid only 5 pounds for the book , _______I expected it would cost.
| A．not as many as | B．not so much as |
| C．cheaper than | D．not so expensive |
_______ you have got used to it , you’ll like it .
| A．While | B．On the condition | C．Once | D．Unless |
We’ll carry the work through , cost _______ it may .
| A．what | B．when | C．where | D．how |
Persist to the end , _______ you are the only one left.
| A．even if /though | B．but | C．however | D．in spite of |