giúp mình bài này nhé ạ ----- Nội dung dịch tự động từ ảnh ----- 1.Teacher: Students: Good morning, teacher! Teacher: Good morning, students! C. sit down A. stand up 2. Don't B. standing up D. sitting down late for school. A. being 3. Please C. been B. be D. All are correct more loudly. A. talk B. do talk C. A and B D. None are correct 4. If you have any questions, please -your hand. A. raising B. raised C. raise D. put down 5. your music, please. It's a little noisy. B. Turn off alone. It's very dangerous. C. Turn up A. Turn on D. Turn down 6. C. Don't travel D. Don't travelling A. Travel B. Do travel 7. Please - your book. Now we move to listening skill. C. close D. closing A. open 8. This is the hospital. B. opening here. A. smoke B. smoked C. Do smoke D. Don't smoke