1. The house was built last year by my father.
2. The floor in my room has been cleaned already.
3. All the food was prepared yesterday.
4. The house is being decorated this week.
5. The town will be visited by the president next month.
6. The letters are opened every morning in the office.
7. The car was three years old, but wasn’t used very much.
1.Don't know.
2.True.
3.Don't know.
1. I was playing football, when I saw her.
2. While she was preparing dinner, he was doing his homework.
3. When I was having breakfast, the phone suddenly rang.
4. I was having a bath at 10.00
1) will be flying 2)harder 3)is flying 4)will take 5)swimming 6)always 7)to complete 8)will have been working 9)are going to fall 10)will become 11)had fled 12)play 13)is thinking 14)opens 15)to eat