If she doesn’t want to go, nothing you can say will ____ her.

A. persuade  B. promise      C. invite     D. support

 Sam ___ some knowledge of computer just by watching others working on it.

A. brought up    B. picked up    C.looked up     D. set up

 That’s the new machine ___ parts are too small to be seen.

A. that      B. which      C. whose           D.what

 We ____ on this project for four hours. Let’s have a rest..

A. are working           B. had worked        

C. worked               D. have been working

 —Thank God you are safe!

— I stepped back, just ____ to avoid the racing car.

A. in time    B.in case             C. in need       D. in vain

 Sorry! I didn’t notice you entering the room because I ______ a phone call.

A. answered   B. had answered    C. was answering  D. has been answering

—John went to the hospital alone.

—If he ___ me about it, I would have gone with him.

A. should tell　　 B.tells　　　 C.told　　 D. had told

 He smiled politely ___ Mary apologized for her drunken friends.

A. if     B. unless      C. though   D. as

 I’ve earned my own living since I was seven, ______ all kinds of jobs.

A. doing     B. having done   C. to do               D. to have done

We’ve had a good start, but next, more work needs ____ to achieve the final success.

A. being done     B. do       C.to be done     D. to do