Exercise 1:
1. boils
2. Do / usually get
3. does / have
4. speaks
5. smokes
6. has
7. Does / visit
8. washes
9. studies
10. Does / swim
11. doesn't like
12. tidies / is
Exercise 3:
1. The clothes is washed every day by Lan.
2. This motorbike is cleaned at home by the boy.
3. Some trees are planted in the garden.
4. Coffee is made every weekend by her mother.
5. Newspapers are read in the living room by my parents.
Exercise 4:
1. A meal is prepared in the kitchen by his sister.
2. The water level is checked every week.
3. This house was built in 1995.
4. My work was finished at about five o'clock by me.
5. This book was used in class.
