----- Nội dung dịch tự động từ ảnh ----- Bài 3 3. Complete the sentences with at, in, or on. (Hoàn thành câu với at, in hoặc on) 1. Her classroom is work. the third floor of that building. 2. When I'm at school, my parents are 3. Look! The students are playing football 4. My little sister usually has lunch_ 5. The most beautiful posters are 4 the wall school. 40 CAPE the classroom. 24 làm việc). Bài 4 4. Work in pairs. Look at the pictures and answer the questions. 151 the staffroom (phòng 1111121916
