giúp mình với

1. I was watching TV when my mom called me. 2. They didn't go to the party last night. 3. While we were walking in the park, we saw a cute dog. 4. Was he playing football when it started to rain? 5. She bought a new dress yesterday. 6. The teacher taught us a new lesson yesterday. 7. I didn't do my homework last night. 8. He fell asleep while he was reading a book. 9. Was she listening to music while doing homework? 10. The students were studying when the power went out. 11. What were you doing when the accident happened? 12. We were dancing while the band was playing music. 13. She wasn't wearing a jacket even though it was cold. 14. The sun was shining brightly when we arrived at the beach. 15. I met my best friend at the party. 16. Were they watching TV when you came home? 17. We were having dinner when the phone rang. 18. My dad was reading a newspaper while my mom was making coffee. 19. The kids were playing outside when it started snowing. 20. She was studying in her room when her mom called her for dinner. 21. He was drinking coffee when I saw him at the café. 22. The dog was sleeping while the cat was walking around the house. 23. I didn't go to school yesterday because I was sick. 24. Why didn't he come to the party last night? 25. Where did they go last night? 26. My brother broke his phone last week. 27. What was she doing when you called her? 28. Was it raining when you left home? 29. We were traveling to another city while our friends were having a party. 30. Did you see John at the mall yesterday? 31. She was writing an email when her laptop crashed. 32. The baby didn't cry last night. 33. Was she sleeping when you arrived? 34. They were running in the park while we were riding bicycles. 35. I lost my keys on the way home. 36. They didn't take notes while the teacher was explaining the lesson. 37. Where did you find your lost keys? 38. The kids didn't play outside because it was raining. 39. Did they have fun at the concert last night? 40. The teacher was writing on the board while the students were taking notes. 41. He didn't finish his homework on time. 42. I woke up late yesterday because I went to bed very late. 43. Were you eating dinner when I called? 44. The dog barked loudly when the stranger came in. 45. Why didn't she answer my message yesterday? 46. He told me a funny joke. 47. Who helped you with your homework yesterday? 48. What were they doing when the accident happened? 49. We didn't have dinner at home; we went out to eat. 50. When I opened the door, the dog ran out.