单词拼写。

1. You should pay attention to your behavior. After all, first ______(印象)are half the battle.

2. It's just a ______(常规的)medical examination, nothing to get worried about.

3. The ______(推荐) dosage (剂量) is one tablet every four hours.

4. If plastic and rubber are burnt, they'll give off ______(毒) gases.

5. These magnificent ancient buildings show the great ______(智慧)of the labouring people.

6. We do not like to b______ with you about the prices.

7. Please reply at your earliest c________.

8. I know him, but we don't f______ see each other.

9. C______ cars are more streamlined(流线型的) than older ones.

10. I taught in the Workers' Educational A______ in the thirties.