31．He devoted much of his time ____ at his lab.

A．to stay

B．to staying

C．stayed

D．in staying

30．A　 s soon as I entered, she look ____ the face.

A．me in

B．me on

C．at me in

D．at me on

29．I didn' t expect them ____ for me when I arrived there so late.

A．to wait

B．to be waiting

C．to have waiting

D．to have been waiting

28．----Why is it so noisy in the next room?

----Because the five children ____ for three hours and their parents ____ the house since they got up.

A．have been up, have been away from

B．had got up, have left

C．have been up, have left

D．have got up, have been away from

27．The health club ____ I am a number meets once a week.

A．which

B．of which

C．that

D．in which

26．A　 traffic accident happened on the highway, and a driver ____.</PGN0017.TXT/PGN>

A．may have hurt

B．may be hurting

C．may be hurt

D．may have been hurt

25．I wanted to borrow some money from him, but he hadn' t ____.

A．any

B．some

C．money

D．one

24．I want to know ____ she'll tell me the truth.

A．what

B．if

C．which

D．that

23．Remember, science requires your whole life, and even if you ____ two lives, they ____ enough．

A．have, is

B．have, isn' t

C．had, would be

D．had, wouldn' t be

22．The boy sat on the sofa, ____ TV programme attentively.

A．watch

B．watched

C．watching

D．to watch