______twice, the postman refused to deliver our letters unless we chained our dog.

　 A. Being bitten　　 B. Bitten　　　 C. Having bitten　　 D. To be bitten

You may use room as you like ____ you clean it up afterwards.u

A. so far as　 B. so long as　 C. in case　　 D. even if

—________I’m going to the post office.

—________ you’re there, can you get me some stamps?

A. As　　 B. While　 C. Because　 D. If

The new group of students is better-behaved than the other group who stayed here_______.

A. early　　　　　　 B. earlier　　　　　　 C. earliest　　　　　 D. the earliest

After graduation she reached a point in her career _________ she needed to decide what to do.

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

When the judge says you are out, it is useless 　　　 with him because his decision is impossible to change.　

　 A. to be argued　 　　　 B. having arguing C. arguing　　 D. argued

What he sad is _______. We are ______ at his work.

A. bored; boring 　　 B. boring; bored　　　

C. bored; bored　 　 D. boring; boring

— What were you doing at that time, young man?

　 — I think I was at school, _______ I was staying with a friend.

A. and then　　 B. or else

C. or so　　　　 D. even so

She was too sad to ______ her tears when she heard the sad news.

A．keep up 　 B．keep out　 　 C．keep back　 　 D．keep away

Stay _____you are until I come back.

A. in the place that　　　 B. as

C. there　　　　　　 　 D. where