Give the correct form of word she already (post) the letter when she (realize) she (send) it to the wrong address?

1. Almost everybody (leave)……………had left……………. by the time we (arrive)……………arrived……………..
2. He (wonder)……………wondered……………. whether he (leave)……………had left……………. his wallet at home.
3. The secretary (not leave)……………didn't leave……………. until she (finish)……………had finished……………. her work. The couple had scarcely (enter)……entered…. the house when they (begin)……………began……………. to argue.
4. The teacher (ask)………asked…………. the boy why he (not do)……………hadn't done……………. his homework.
5. She had already (post)……posted…. the letter when she (realize)……realized…. she (send)……had sent…. it to the wrong address.
6. Hardly had the car (go)…gone a mile when it (have)………had……. a flat tire.
7. The weather (be)…is…. far worse than we (expect)……expected…..
8. They (be married)………had been married……. for five years when thy finally (have)………had………. a child.
9. No sooner had they (sell)……sold…. their car than they (regret)…………regretted………. having done so.
10. When she (finish)……had finished…. her work she (go)………went……. to the cinema.
11. He (not eat)……didn't eat……. until his parents (come)……………came……………. home.
12. She (tell)……told………. she had never (meet)……………met……………. him.
13. He (do)……had done……. her homework before he ( go)………went……. out.
14. The lights (go)……went……. out the moment he (get)……got……. into the cinema.
15. Hardly had the holiday (begin)………begun……. when they (leave)………left………. the town.
16. They (be)……had waited……. out for an hour when it (start)………………started…………. to rain.
17. They (leave)………left……. the shop as soon as they (buy)……had bought…. everything they (need)……needed……..
18. The house (burn)………had burned……. to the ground by the time the firemen (arrive)……………arrived……………..
19. As he (do)………had done………. a lot of work that day he (be)………was……. very tired.
20. I had already (hear)………heard……. about the accident when he (tell)………told………. me about it.
21. He (live)………had lived……. in the country for ten years when he first (come)……………came……………. to London.
22. I (not talk)……didn't talk……. to him because when I (arrive)……………arrived……………. he had already (leave)…………left………………..
23. When we (go)………went……. out again, the wind (stop)……………had stopped……………..
24. He (think)………thought………. he (win)……………had won……………. in the lottery but he (not have)……………hadn't……………. of course.
25. No sooner had the bell (ring)…………ring……. than the pupils (go)……went………. out to play.
26. Before you (mention)…………mentioned………. his name, I had never (hear)…………heard……. of this poet.
27. Our guests (be)………were……. still here when he (come)………came……. back from school.
28. The same day he (arrive)……arrived………. I (receive)………received………. a postcard from him.
29. They had just (close)………closed………. the shop when I (get)……got……. there.
30. When the policeman (blow)………blew……. his whistle the driver (stop)………stopped……. the car.