Complete the sentences with at/ in/ on. (Hoàn thành các câu với at / in / on.)

We often hang the posters for our presentations … the classroom wall.

My school starts … 7:30 a.m. and finishes … 11:30 a.m.

She often finishes work … 5 o'clock … the afternoon.

Oh no! Don't play … the science lab. You'll mess up everything.

Many people like to travel … holiday, but some just want to stay … home.

Complete each gap in the text with at/ in/ on. (Hoàn thành từng khoảng trống trong văn bản với at / in / on.)

Hoang Anh Secondary school was set up five years ago, (1) September 5th. It is a semi-boarding school, so students don't come home (2) noon. Rather, they have lunch (3) the school canteen and take a rest (4) the resting rooms. The school has many facilities, such as a library, three function rooms, and well-equipped classrooms. Students like to play sports in the gym and do outdoor activities (5) the school yard (6) their break time.

John's mother is … the second floor of the supermarket. She's shopping for his birthday … November.