Điền giới từ thích hợp: We have English lessons .......................... Room 12. There are 24 tables for students and one desk for the teacher. ................. the walls, there are a lot of posters of england. There's a cupboard in the front of the room and .......... the cupboard, there is a TV and DVD player. Sometimes we watch films. There are some bookselves, there are a lot of english books. our books are ................ the teacher's desk. He wants to look at our homework. Our school bags are ......... the floor, and there is some food ................ the school bags. It's now 5:30 pm. We are ................. home, but our teacher is ................. school. He often stays up late to prepare for tomorrow's lessons