1 . 李娜，著名的中国网球运动员，把她23年的光阴都用于打网球。
Li Na, a famous Chinese tennis player, ________ her 23 years ________ ________ tennis.

3 . In the countryside it is not as easy to do research as in the city. (变成动名词作主语)
________ research in the country is________difficult than in the city.

10 . 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.