4. I have learned English for about two years. (同上)

　　　 English ______ ______ ______ for about two years.

3. A lot of people in China can speak English now . (同上)

　　　 English ______ ____ ______ by a lot of people in China now.

2. Li Lei gave Tom a new pen last week . (同上)

　　　 A new pen _____ _______ _____ Tom last week .

1. They often clean their classroom after school . (改为被动语态)

　　　 Their classroom _____ often ______ by them after school.

8. When was invented the bicycle ? ____________________

7. Somebody broke into our house but nothing stolen. ____________________

6. How many languages are speaking in Switzerland ? ____________________

5. Where are you born ? ____________________

4. A garage is a place where cars repair. ____________________

3. Why did the letter send to the wrong address ? ____________________