Chia động từ ở trong ngoặc ở thì quá đơn hay quá khứ hoàn thành 1. Almost everybody (leave)…………………………. by the time we (arrive)…………………….. 2. He (wonder)……………………. whether he (leave)…………………………. his wallet at home. 3. The secretary (not leave)…………………. after she (finish)…………………………. her work. 4. The couple (already/ enter)…………………………. the house when they (begin)………. to argue. 5. The teacher (ask)……………. the boy why he (not do)…………………………. his homework. 6. She (already/post)…………………………. the letter when she (realize)……………………. she (send)……………………. it to the wrong address. 7. Before she (finish)………………. her work, she (go)…………………………. to the cinema. 8. He (not eat)…………………………. until his parents (come)…………………………. home. 9. She told me she never (meet)…………………………. Him before. 10. He (do)…………………………. her homework before he ( go)…………………………. out. 11. The film ( start)…………………………. By the time he (get)……………. into the cinema. 12. They (leave)……………………. the shop as soon as they (buy)…………………. everything. 13. The house (burn)……………………. to the ground buy the time the firemen (arrive)………….. 14. I (already/hear)…………………………. about the accident when he told me about it. 15. He (live)…………………. in the country for ten years before he (come)…………. to London. 16. When I (arrive)…………………………., he (already/ leave)………………………….. 17. Before you (mention)……………. his name, I (never/ hear)………………. of this poet. 18 They (just / close)…………………………. the shop when I (get)…………………………. there.