Thì quá khứ đơn và 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)…………………………. until she (finish)…………. her work. The couple scarcely (enter)………. the house when they (begin)………………. to argue. 4. The teacher (ask)…………………. the boy why he (not do)……………. his homework. 5. She already (post)………. the letter when she (realize)………. she (send)………. it to the wrong address. 6. Hardly the car (go)… a mile when it (have)……………. a flat tyre. 7. The weather (be)……. far worse than we (expect)……….. 8. They (be married)……………. for five years when thy finally (have)………. a child. 9. No sooner they (sell)………. their car than they (regret)…………………. having done so. 10. When she (finish)………. her work she (go)……………. to the cinema.

1. Almost everybody (leave) had left by the time we (arrive) arrived
2. He (wonder) wondered whether he (leave) left his wallet at home.
3. The secretary (not leave) hadn't left until she (finish) finished  her work. The couple scarcely (enter) had entered the house when they (begin) begun to argue.
4. The teacher (ask) asked the boy why he (not do) hadn't done his homework.
5. She already (post) had posted the letter when she (realize) realized she (send) had sent it to the wrong address.
6. Hardly the car (go) had gone a mile when it (have) had a flat tyre.
7. The weather (be) was far worse than we (expect) had expected
8. They (be married) had married for five years when they finally (have) had a child.
9. No sooner they (sell) had sold their car than they (regret) regreted having done so.
10. When she (finish) had finished her work she (go) went  to the cinema.

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