Chuyển các câu sau sang dạng bị động.

1.    I learn Japanese twice a week.

2.    My son is  finding some information for his essay now.

3.    She hasn’t worn jeans before.

4.    I am not reading a newspaper at present.

5.    Have you ever spoken Chinese before?

6.    They have bought this car since 2000.

7.    We didn’t find any good solution to that problem.

8.    How often do you feed your cat?

9.    I don’t use the Internet.

10. They have built many houses for the poor recently.