Giúp mình với ạ ----- Nội dung dịch tự động từ ảnh ----- 21. She (just buy) a new fridge. 22. Long (listen) to this song many times. 23. Ngan (not learn) computer science yet. 24. Lai (open) a karaoke shop next month. 25. Nga (not lock) the door last night. 26. Phong (water) flowers recently? 27. Hong Nga (just catch) a frog in the meadow. 28. Bich Tran (hold) a party next week. 29. Turn off the radio. We (discuss) an important problem 30. While students were doing a test, Mr Anh (wor on his laptop. 31. How long you (learn) English? 32. I left the room after I (lock) the door. 33. Before he said good-bye, he (enjoy) the party. 34. He said that he (meet) them before. 35. Kathy (live) in Paris for five years. 36. Betty was ironing her clothes when Jack (come) in. 37. We (talk) to him when she called us. 38. Mary (learn) in New York since 2008. 39. Keep silent! Someone (come). 40. After he (finish) his work, he went home.