1. He was born in September.
2. I go swimming at the weekend.
3. My sister does her homework in the afternoon.
4. I don't go out on Friday evening.
5. We went to the concert last week. (Не нужен.)
6. I woke up at midnight.
7. In summer he usually stays with his grandparents.
8. My mother was born on May 20.
9. We were at home yesterday evening. (Не нужен.)
10. We get a lot of presents on Christmas day.