Chuyển các câu sau sang câu bị động ở dạng câu trần thuật

1 , they say that many people are homeless

2. they know that the president is visiting hoi an

3. they expect that the government will lose the election

4 . people know that she is armed

5 . we know that you were in town last sunday

6 . she preferred that man to teach her

7 . people beilive he has worked for the president

8. everyone thought that she passed the exam

9. people said that helen missed the train

10. it is believed that the man is living in newyork

11, it is believed that chinese inviented guns

12. they declare that she won the competion

13. people know that english is an international language

14, no one says that the boy has left here