I

12 These plant ought to be watered once a week

13 He was said to be the richest man in town

14 The boy knew that he was being praised

15 He's believed to have died of lung cancer

II

1 They are making progess in science day after day

2 A french architect designed the palace

3 They have paved the road in front of my house

4 You can see that they haven't washed the dishes

5 They won't increase our salaries this year

6 Did people built that theater 2 years ago?

7 They may discuss the problem again

8 They have offered my brother a well-paid job

12. These plants ought to be watered once a week.

13. He was said to be the richest man in the town.

14. They were known to had been praising him. (?)

15. He was believed to had been died of lung cancer.

II.

1. They are making progess in science day after day.

2. A French architect designed the palace.

3. They have paved the road in front of my house.

4. They haven't washed the dishes.

5. They won't increase our salary this year.

6. Didn't they bulid that theater two years ago?

7. They may disscuss the problem again?

8. They have offred my brother a well-paid job.