11. They don't make this kind of watch in Beijing.(改为被动语态）

This kind of watch              in Beijing.

10. The car      always           (clean) by Mr. Zhang in the morning.

9. Such exercises      often      (do) by the students in class.

8. The workers        (make) to work 12 hours every day.

7. Three languages      (use) in this country.

6.        our school       (visit) by many people every day?

5. Computers        (not sell) well in that shop.

4.________   the flowers       (water) every day?

3. Usually,my homework      (not do) in the afternoon.

2. The dogs       (take) good care of by my mother.