1 . Many experts hold the view _______ protection awareness is _______ the key to better environment lies.

A．which; where

B．which; in which

C．that; where

D．that; in which

2 . —I feel it difficult to apply for a job in that famous company.
—Why not read this magazine? This is ________ some useful information is available.

A．what

B．how

C．where

D．that

3 . This is ________ my father has taught me—to always face difficulties and hope for the best. (用适当的词填空)

4 . English has many borrowed words, _____ it is rather confusing to learners.

A．this is why	B．this is because
C．which is why	D．which is because

5 . He had seen the movie before. That’s ______ he didn’t see it last night. (用适当的词填空)

7 . What has caused great confusion is ____________ the scientist made it without anyone else’s help. (用适当的词填空)

8 . One reason why there are so many French words in English is _____ the French ruled England for quite a number of years. （用适当的单词填空）

9 . Although a number of tombs have survived with little damage,the truth is__________all have suffered at least some harm from centuries of rain,war,fire and theft. (用适当的词填空)

10 . Respect is not one-way traffic but mutual, and that might be          we fight back in the trade friction against the USA   .

A．where

B．because

C．why

D．how