The following ______ what we should pay special attention to when we are in the lab.

A. is　　　　　　　 B. are　　　　　　　 C. was　　　　　　　 D. were

The number of people invited_____fifty, but a number of them_____absent for different reasons.

A. were; was　　 B. was; was　　 C. was; were　　　 D. were; was

They don’t know much about ________ English language but they can speak ________ English well.

　 A. /; /　　　　 B. /; the 　　　 C. the; /　　　　 D. the; the

____ that we all went out, lying in the sun.

A. The weather so fine was 　 B. So fine was the weather

C. So the weather was fine 　 D. So was the fine weather

It is illegal for a public official to ask people for gifts or money 　　　 favors to them.

A. in exchange for　 　　　　　 B. in place of　 　

C. in agreement with　 　　　　　　 D. in preference to

Every boy and every girl as well as some teachers who _________to visit the museum _________asked to be at school gate before 6:00 in the morning.

　　　　 A．are；are　　　 B．is；is　　　　 C．is；are　　　 D．are；is

The ________ of air also explains why the stars don't seem to twinkle in space.

A. absence 　　　　 B. absent

C. present 　　　　 D. presence

She watches TV _______ evening and changes channels(频道) ____ few minutes.

　 A. in; every　　 B. every; every

C. every; each　　 D. every; in

All________is a continuous supply of the basic necessities of life.

A．what is needed 　　B．for our needs　　 C．the thing needed D．that is needed

At the moment we had nothing to do but __________________ (求助于他).(turn)