What happens when air is heated unevenly

1.I go to bed at ten o’clock every day. I went to bed at ten o’clock yesterday. I will go to bed at ten o’clock tomorrow.

2. I don't go to school every day. I didn't go to school yesterday. I will not go to school tomorrow.

3. Do you watch TV every day? Did you watch TV yesterday? Will you watch TV tomorrow?

4. When do you leave home for work every day? When did you leave home for work yesterday? When will you leave home for work tomorrow?

5. My brother goes to work every day. He leaves home at eight o’clock. His office is near our house and he walks there. He doesn't take a bus. Yesterday he didn't go to work. Yesterday he got up at nine o’clock.

6. Did you have time yesterday? — No, I didn't .

7. What did you buy at the shop yesterday? — I bought a book.

8. Yesterday my father didn't read newspapers because he was very busy. He will read newspapers tomorrow.

1. They haven't done anything. Have they done anything?
2. He hasn't given them any money. Has he given them any money?
3. You haven't brought anything for us. Have you brought anything for us?
4. I haven't taken any English books from you. Have I taken any English books from you?
5. She wasn't reading anything. Was she reading anything?
6. He hasn't written a letter to anybody. Has he written a letter to anybody?
7. Nobody by the name of Petrov lives on the third floor. Does anybody by the name of Petrov live on the third floor?
8. They don't have any English books. Do they have any English books?
9. There aren't any tall trees in front of their house. Are there any tall trees in front of their house?
10. Peter doesn't have anything in his box. Does Peter have anything in his box?
11. There aren't any parks in his town. Are there any parks in his town?
12. There aren't any good bookshops in our district. Are there any good bookshops in our district?