4. “What do you think is the most important _________(different) between the two words?” the teacher asked.　

3. Compared with the past, people today are _________(healthy) and live longer.

2. The situation was much _________(bad) than they had expected.

1. People are not the only ones hurt by air _________(pollute).

5. When you are ill, please take the m_______ as the doctor tells you.

4. Too much work and too little sleep usually cause (引起) i_______.

3. Should students be allowed to use cell phones in school? The teacher organised a d_______ about it last week.

2. 　 -Will Mr Wang come to our party?

　　　 -I s________ so.

1. Washing hands often is one of the best ways to p_______ the spread of H1N1

flu (H1N1型流感).

5.　　 用陶瓷杯比用纸杯好，因为它可以重复使用。

________ ________ to use a china cup than a paper cup because it can be used again.