1 . Scientists are convinced _____ the positive effect of laughter _____ physical and mental health.

A．of; at	B．by; in
C．of; on	D．on; at

2 . Many Chinese universities provide scholarships for students ______ financial aid.

A．in favor of

B．in honor of

C．in face of

D．in need of

3 . —— Sorry, Professor Smith. I didn’t finish the assignment yesterday.
—— Oh, you ________ have done it as yesterday was the deadline.

A．must	B．mustn’t
C．should	D．shouldn’t

4 . The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good ______.

A．expectation	B．reputation
C．contribution	D．civilization

5 . If   we ___________some measures, we might have prevented the environmental pollution.

A．take

B．had taken

C．took

D．have taken

6 . Could you give me a hand? It seems that my strength has _________.

A．used up

B．been given out

C．run out

D．been run out

7 . His promise ___ he would marry her when he came back turned out to be a lie, ___ left the girl heart-broken.

A．which; what

B．that; which

C．what; which

D．which ; that

8 . Unfortunately，_____ stone hit him on ______ head and he got injured.

A．the；a	B．a；/
C．a；the	D．the；the

9 . —I’m sorry I broke your teapot.
—          .

A．Forget it

B．You are welcome

C．Definitely

D．Not really