5. You’d better ______(finish)your homework on time.

4. It took him half an hour ______(wash)his clothes yesterday.

3. A transporter would send you from one place to another place very _____(quick)

2. This bicycle is much _____(light)than that one.

1. When was the modern bicycle ____(invent)?　

　 1. E_____ a child can understand this easy question.

　 2. The road is d _____ for playing football.

　 3. D　　　　 　the summer holiday I went to the seaside.

　 4. I know who I _____ electric lights.

　 5. Yesterday I r____ my bike to the park.

　 6. Today the train goes at a r_____ speed.

　 7. What t_____ of transportation do you prefer?　

　 8. A bike has two w______.

　 9. A bird flies with w_______.

　 10. Now there are many f______ to make cars.

5. Li Lei can’t go hiking with us today，because he _____take care of his mother.

　 A. has to　 　　　　　 B. may 　　　　　　　 C. mustn’t 　　　　　 D. needn’t　

4. Tell those children _______there. It’s dangerous.

　 A. not swim 　　　　　 B. not to swim 　　 C. don’t swim　　

3. This painting ______to a museum in New York in 1977.

　 A. sells 　　　　　　　　 B. sold　 　　　　　　 C. was sold 　　　　 D. is sold