Điền giới từ thích hợp vào chỗ trống: 1) I have dinner at 6.30 .... 7.30 and 8.30. I do homework. 2) My father meets me ... school and drives me home

Điền giới từ thích hợp vào chỗ trống:
1. I have dinner at 6.30 ......... 7.30 and 8.30. I do homework
2. My father meets me ............ school and drives me home
3. She said she would lock the gate ................ that timer
4.Ì you arrive ......... 5p.m you won't be able to mail your letters.