16.
1. Is the car cleaned in the garage by your father?
2. were => was
3. purchase => purchased
4. lay => laid
5. is => was
6. Did => Was
7. worked => working
8. The tower was built by a famous architect in 1990.
9. with => by
10. Did you walk to school when you were a child?
bai 17
1. were demolished
2. was constructed
3. is located
4. are preserved
5. is regared
6. was completed
7. are sold.
8. were visited
9. Was Jim invited
10. were solved
bai 18
1. am not permitted
2. makes
3. is expected
4. doesn't let
5. was paid
6. was designed
7. was rumoured
8. ordered
9. are often shined
10. is lighted
11. Did your health worsen
12. promised
13. were covered
14. often make
15. was moved.
