Ответ на вопрос: 1. I have breakfast (in / on / at) 8 o'clock. 2. We go to the beach (in / on / at) summer. 3. My birthday is (in / on / at) September. 4. The meeting is (in / on / at) Tuesday. 5. The concert starts (in / on / at) 7 p.m. 6. I do my homework (in / on / at) the evening. 7. Christmas Eve is (in / on / at) 24th December. 8. He was born (in / on / at) 1995. 9. We have a break (in / on / at) lunchtime.