—We must control the number of tourists to the Antarctic.

—________ We can't imagine what will happen if we don't.

A．I can't agree more.　　 B．Take it easy.　 C．So what?　　　　 D．Don't mention it.

Every student as well as teachers who　　 to visit museum　　　　 asked to be at the school gate on time.

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

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 ,were

In the dark street, there wasn’t a single person _____ she could turn for help.

　 A. to whom 　 B. who

　 C. from whom 　 D. that

It is not I but Mr. Green who ____ in charge of the company.

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

Those successful deaf dancers think that dancing is an activity ____ sight matters more than hearing.

A. when　　 B. whose　　 C. which　　 D. where

Doing morning exercises surely has some b_____________ effects on our health.

We are living in an age ____________ we treasure very much, because it sees man’s rapid development.

A. which　　　　　　 B. when　　　　　　　 C. where　　　　 D. what

From facts，scientists have ________ that more energy is being absorbed from the sun，throwing the earth’s energy “out of balance”.

A. confirmed 　　　　　　　　 B. concluded

C. concentrated 　　　　　　　 D. centred

At the beginning of class,　　　　　　　　　　　 (课桌打开和关上的噪音) could be heard outside the classroom.(close)