这痤桥把我们家乡与城市连接起来。(be connected to)

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—Do you think we’ll tell him the bad news?

— ________.

A. I don’t hope so　　　　 B. I hope not

C. I think it not so　　　　 D. I think it not

____ he had not hurt his leg, John would have won the race.

A. If B. Since　 C. Though　　 D. When

After a knock at the door, the boy heard his mother’s voice ________him.

A.calling　　　　 B. called　　　　 C.being called　　 D. to call

___ from space, the earth with water ___70％ of its surface looks like a "blue blanket".
A. Seen ; covered B. Being seen; covers C. Seeing; covering D. Seen; covering

There were some chairs left over　　　　 everyone had sat down.?

A.when　　　　　　　 B.until　　　　　　　　 C.that　　　　　　　 D.where

The research is so designed that once ___ nothing can be done to change it.
A. begins B. having begun C. beginning D. begun

The boy acted ____ he had never lived in Canada before.
A. as though 　　 B. even if 　　　　 C. as 　　　　　　　 D. since

All of the flowers now raised here have developed from those _______ in the forest.

A. once they grew　　　　　 B. they grew once

C. they once grew　　　　　 D. once grew

Excuse me I ________ I was blocking your way.

A.didn’t realize　　 　 B.don’t realize　 　　 C.haven’t realized　 D.wasn’t realizing