1. You'd better travel around Nanjing with a local tour guide _____ you want to know more about its culture.

A. unless

B. until

C. although

D. if

2. — What do you think of your English teacher ?

   — I like him very much. He is ____ kind ____ hard-working.

A. either , or

B. neither , nor

C. not , or

D. not only , but also

3. I failed the exam ______ I did my best. But I'll try harder next time.

A. when

B. until

C. though

D. because

4. _____ stop more accidents, we should slow down the driving speed.

A. In order that

B. In order to

C. Thanks for

D. Thanks to

5. Bob is always polite to everyone, and he is ____ lovely ____ all of us like him very much.

A. too…to

B. neither…nor

C. so…that

D. such…that

6. It might be a boy's room _____ the clothes look like boy's clothes.

A. when

B. because

C. but

D. /    

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