1. He got up at seven o'clock yesterday.
2. Father came home at 6 o'clock yesterday.
3. I was reading a book at 6 o'clock yesterday.
4. She fell asleep at eleven o'clock yesterday.
5. Mother was drinking tea at eleven o'clock yesterday.
6. Father was watching TV at ten o'clock yesterday.
7. I went to bed at nine o'clock yesterday.
8. I finished my homework at nine o'clock yesterday.
9. I was playing the piano at five o'clock yesterday.
10. He began to do his homework at four o'clock yesterday.
11. She was washing the floor at four o'clock yesterday.
12. I was meeting Nick at three o'clock yesterday.