It was not until then that I came to know that knowledge _______ only from practice.?

A. had come B. has come

C. came D. comes?

—The boss said we had only three days to finish the work.?

—Don’t worry.We have already _______ two thirds of it.?

A. got down B. got through?

C. given in D. given away?

It’s ten years since the scientist _______ on his life’s work of discovering the valuable chemical.

A. made for    B. set out?

C. took off     D. turned up?

______ is reported in the newspapers, talks between the two countries are making progress.

A. It B. As?

C. That D. What?

He was educated at a local grammar school, _______ he went on to Cambridge.

A. from which?

B. after that?

C. after which?

D. from this?

The children were catching butterflies in the garden. Some caught a lot, and others caught _______at all.

A. nothing      B. none

C. no one       D. neither

You may take them all home_______.

A. if possible     B. if can        C. unless so     D. even if you can

__________ fired, your health care and other benefits will not be immediately cut off.

A. Would you be     B. Should you be   C. Could you be      D. Might you be

— I'd rather have some wine， if you don't mind.

    — ____.

A. No， you'd better not                  B. Not at all， anything you want

C. Thank you all the same            D. Yes， but not good

——Do you mi nd if I open the window?   ——_______ . I feel a bit cold.

  A. Of course not    B. I'd rather you didn't

  C. Go ahead        D. Please close it