2. 这次会议的目的是警告我们吸烟的危险。
The purpose of the meeting is ______________________________ of smoking.

to warn us of the danger

3. 关于阅读习惯的讨论将在今天下午的班会课上进行。
______________________________ in the class meeting this afternoon.

A discussion about/on reading habits will take place

4. 直到其他客人都准备好了你才能开始吃。
You ______________________________ are ready.

can't start eating until/before other guests

5. 嘴巴里含着食物和别人说话是不礼貌的。
It’s ______________________________.

impolite to talk with others with food in your mouth

6. 今天格林先生会给我们提出许多关于餐桌礼仪的建议。
Today Mr Green will ______________________________.

give us a lot of advice on table manners

7. 首要的是，我们得保证自己在公共场所表现得有礼貌。
______________________________.

Above all, we should make sure we behave politely in public places

假如你是李华，你的笔友汤姆将要来常州参加一个交换生项目，以下是他发来的邮件，请你阅读邮件并进行回复，100词左右。

Dear Li Hua,
How are you? Next week, I am going to Changzhou on an exchange programme. Could you please tell me how to greet people in Changzhou when I meet them for the first time? Would you please introduce some Chinese table manners to me? Do you have any tips for behaving properly in public? Please write back soon.

Yours,
Tom

Dear Tom,
I’m glad to hear from you.

______________________________
Yours,
Li Hua

One possible version:
Dear Tom,
I'm glad to hear from you.
Let me tell you something about how to behave properly in Changzhou. When you meet people for the first time, you should say hello and shake hands with them. We Chinese don't greet each other with a kiss. When you eat with Chinese, you should try not to make too much noise. Also, you'd better not talk with others with your mouth full. Before you leave, wait for everyone to finish. When you are in public places, don't talk loudly. It's rude to push in before others. You should wait in line.
I hope these tips are helpful to you.
Yours,
Li Hua