Hãy sử dụng thì Quá khứ hoàn thành hoặc thì Quá khứ đơn hoặc thì hiện tại hoàn thành cho mỗi động từ trong ngoặc
51. I’d rather they (not say) anything. 52. No sooner they (start) the game than it (rain) heavily. 53. Hardly she (enter) the room when he (go) out. 54. By the time he opened the book, the teacher (tell) him to stand up. 55. She (have) a lot of trouble with her motorbike last week. 56. Mary and Tam (shout) when they (see) a snake. 57. I (not finish) writing this book yet. 58. I (graduate) from the university in 2001. 59. It is nearly 10 years since I (become) a teacher of English. 60. When I (arrive) at the movie, they were sitting on the chair.
