制作全口义齿托时，后牙区堤的宽度一般为（）

A．6mm

B．8～10mm

C．12mm

D．15mm

E．20mm

完成句子。

根据汉语意思用英语完成句子, 将答案写在横线上。

1. 他在实验室里有两只叫吉米和里奇的小老鼠.

He has two _____ _____ Jimmy and Lichy in the lab.

2. 你知道"熟能生巧"这个谚语吗?

Do you know the proverb of "_____ makes _____ "?

3. 我不认识这个人,以前也没有听说过他的事.

I don't know him and I haven't _____ _____ him before,_____ .

4. 如果她把你房间弄脏了别厌烦.她只有三岁.

Don't _____ _____  if she makes your room _____. She is only three.

5. 我的父母靠在市场上买菜谋生.

My parents _____ _____ _____ by selling vegetables in the market.

6. 我现在很忙,请别总是老跟着我.

I'm very busy now. Please don't follow me around _____ _____ _____.

7. 每个办公室里都有一个标签,"禁止吸烟".

There is a sign in each of the offices-" _____ _____".

8.为什么不穿上你的外套?外面下雪了.

_____ _____ _____ put on your coat? It's snowing _____.

9. 电影那么无聊,以至于我中途就睡着了.

The movie was so boring that I _____ _____ half way through it.