12. Russian ____________ (learn) as the second language by some students in China.

11. These kinds of machines __________ (make) in Japan.

10. Some flowers __________ (water) by Li Ming already.

9. The stars _____________ (can see) in the daytime.

8. The room _____________ (clean) by me every day.

7. ______ the magazine ____(can take) out of the library?

6. A Piano concert _____________(give) here last Friday.

5. What ___ a knife ______ (make) of?　

4. Vegetables, eggs and fruits_________ (sell) in this shop.

3. The old man is ill. He ______ (must send) to the hospital.