1. I watched TV yesterday. (or I didn't watch TV yesterday.)
2. I got up before 7:30. (or I didn't get up before 7:30.)
3. I had a shower. (or I didn't have a shower.)
4. I bought a magazine. (or I didn't buy a magazine.)
5. I spoke English. (or I didn't speak English.)
6. I did an examination. (or I didn't do an examination.)
7. I ate meat. (or I didn't eat meat.)
8. I went to bed before 10:30. (or I didn't go to bed before 10:30.)