Вставьте аt, in или оп. . 1. My sister comes home . . . 8 o'clock . . . the evening. 2. We usually have six lessons . . . weekdays. 3. There are many stars in the sky. . . night. 4. Children do not go to school summer. 5. My grandmother usually sleeps . . . the afternoon. 6. Her birthday is . . . 27" November. 7. My father gets up . . . 7 o'clock . . . the morning. 8. They come to school . . . 8. 45. 9. Does your father go to work . . . Saturday?10. It is cold . . . winter. 11. We watch TV . . . the evening.