1 . I like TV plays best, w________ (然而) my brother is crazy about sports games.

2 . 汤姆很穷，而他的弟弟却发了财。
Tom was poor ________ his brother became very rich.

3 . —Will you and your parents all go to Hainan during the winter holiday?
—Yeah. I’ll stay there till the end of the holiday, ________ my parents will go there only for a short stay.

A．when

B．after

C．because

D．while

4 . There is no way of knowing why one man makes an important discovery ________ another man, also smart, fails.

A．since

B．while

C．though

D．if

5 . 她刚睡着, 而其他同学睡着很长一段时间了。
____________________________________

6 .

while   influence   Asia   above   smooth

1. The oil pollution has ________ the drinking water in this village
2. Clothes made of silk are very popular among ________.
3. The plane is circling ________ the river, ready to save the people in trouble.
4. The interview went ________ with the manager's help.
5. My brother likes sports, ________ I prefer music.

7 . I’m good at English ________ my best friend , Jerry is good at math.

A．when

B．as

C．while

D．and

8 . My sister likes math while my brother likes English. _____________

9 . Cindy and I are twin sisters, but I like singing ______ she likes dancing.

A．when

B．as

C．or

D．while

10 . —Not all people coming here are real bird lovers.
—Yeah. Some try to make the place a better area ________ others just bring trouble.

A．so

B．because

C．while

D．moreover