2 . Just         your head or simply keeping silent is not acceptable when answering questions in class; you need to talk!

A．to nod

B．nodded

C．nodding

D．nod

3 . 每句中有两处错误。每处错误仅涉及一个单词的增加，删除或修改。
1. Do you fancy go to the dance Saturday night?
2. You will be probable to get to there before 8 o’clock.
3. The boss made them to work long hour.
4. The father as well as his three children go skating on the frozen river every Sunday afternoons in winter.
5. Our teacher told us that the team was consisted of eleven excellent player.
6. You can’t work out the problem. I’d like to give you some suggestion. Please receive it.

4 . 单句改错
1. Not until a few months later he know the story.
2. Ladies and gentlemen, please fasten your seat belt (安全带). The plane is take off.
3. I’m written to tell you something that I don’t think is good.
4. I can’t stand laughed at in public.
5. Million of people all over China were watching TV when the spaceship landed safely.
6. A new building has been set up on where used to be a sports field.
7. John has the same bike that my father bought me.
8. He earned such much money that he can barely support his family.
9. What reasons do people have of doing voluntary work?
10. If there is a fire, dialing 119 as soon as possible.

5 . We will know more about our history by __________cultural understanding.(根据句意填空)