----- Nội dung dịch tự động từ ảnh ----- 1* 1. The teachers teacher's room. A. were sitting/entered C. are sitting/entered 2. They A. was talking C. were talked 3. When they arrived we A. had already started C. starts around the table when I B. sat/ was entering D. were sat/was entering about the students who failed in exams. B. were talking D. talks the test. B. have already started D. already starting the