一、根据汉语提示填写单词。
1. After two minutes, he still (保持不变) silent and kept his eyes closed.
2. I found he was (煮沸) water when I came in.
3. These (饼干) have different kinds of shapes and tastes.
4. Ring the (门铃) to see if they're in.
5. Can you tell me when the (冰箱) was invented?

1. remained 2. boiling 3. biscuits 4. bell 5. fridge

二、用括号内所给词的正确形式填空。
1. Do you know how fast ____ (wolf) can run?
2. Did you make all the ____ (cookie) at the party tonight?
3. The book was ____ (translate) into many other languages last year.
4. Kings and queens were once the country's ____ (ruler).
5. Those ____ (instrument) are used for different experiments.
6. They raise the ____ (nation) flag at six o'clock every morning.
7. After the concert, the voice of the singer still ____ (ring) in my ears yesterday.
8. He turned back ____ (sudden) and looked at me.
9. It is necessary to have rich ____ (music) experience.
10. They were surprised that the door was ____ (lock).

1. wolves 2. cookies 3. translated 4. rulers 5. instruments 6. national 7. rang 8. suddenly 9. musical 10. locked

三、从方框中选择适当的短语并用其正确形式填空。
by accident less than without doubt all of a sudden national drink
1. Nowadays, green tea has become a kind of around the world.
2. , she didn't feel sleepy anymore and went on with her work.
3. The yearly sports meeting in our school will take place in two days.
4. , this is the most important achievement that I have made at college.
5. He hurt his fingers when cutting these vegetables.

1. national drink 2. All of a sudden 3. less than 4. Without doubt 5. by accident