1 . —Why haven’t you asked her to come here?
— She _____ an important experiment when I found her and she _____ it.

A．had done; didn’t finish

B．was doing; hasn’t finished

C．did; wouldn’t finish

D．has done; hadn’t finished

2 . It is difficult ______ a best friend.

A．to find

B．finding

C．find

D．to be found

3 . It’s no good ________about his grades.

A．worrying	B．to worry
C．to be worried	D．worry

4 . ________ seems to have been great difficulty in turning out excellent graduates.

A．That

B．What

C．It

D．There

5 . It’s more than half a century ________ my grandfather joined the Party and became a servant to the people.

A．since

B．that

C．when

D．while

6 . The field research will take Joan and Paul about five months；it will be a long time________we meet them again.

A．after	B．before
C．since	D．when

7 . It’s no use _______ my husband ________ money. He won’t take your advice.

A．to argue with; about	B．arguing about; with
C．arguing with; about	D．to argue about; with

8 . The girl had hardly rung the bell       the door was opened suddenly, and her friend rushed out to greet her.

A．before

B．until

C．as

D．since

9 . If I were in a movie, then it would be about time that I ____my head in my hands for a cry.

A．bury

B．am burying

C．buried

D．would bury

10 . Either you or one of your students________ to attend the meeting that is due tomorrow.

A．are

B．is

C．have

D．be