----- Nội dung ảnh ----- 1. They were having fun while their mother (watch) them. 2. He had already finished his homework when his friends (call) him. 3. Tell Susan to be ready at 7.00 as soon as you (see) her. 4. By the time dinner (be) cooked, I felt really exhausted. 5. David quit his job after he (find) a better one. 6. Peter waited until his parents (go) out before he (turn) up the volume of his CD player. 7. It makes me feel angry whenever I (hear) about him. 8. The washing machine will continue making that noise until we (get) someone to fix it. 9. They had carved the pumpkin by the time the guests (arrive). 10. She will buy a bigger house as soon as the bank (give) her the loan. 11. While she (walk) down the street, a man attacked her. 12. ERROR CORRECTION (Sửa lỗi sai)