1 . From space, the earth looks blue.This is _______about seventy-one percent of its surface is covered by water.

A．why	B．how
C．because	D．whether

2 . Everybody present at the party was surprised at ______ Kate said.

A．what

B．how

C．when

D．whether

3 . I am ________ (occupy) with my occupation, which occupies most of my time every day. （所给词的适当形式填空）

4 . The villagers were shocked at the news. No one knew ________ would happen next.

A．how

B．when

C．which

D．what

5 . He will get a job more easily ________ he makes his computer skills better.

A．if

B．before

C．while

D．though

6 . Was it from the lake ______ he often went fishing ______ he saved the drowning girl?

A．that; that	B．where; where
C．where; that	D．that; where

7 . The reason _________________ he explained to us was that he hadn’t read it before.

8 . We are in a difficult position in____ we have nobody properly qualified for this work.

A．that

B．when

C．what

D．where

9 . I have found the book ______ will help me a lot.

A．that

B．who

C．where

D．why

10 . ________their wedding ceremony will be held in the open air tomorrow depends on the weather.（用适当的词填空）