пожалуйста зделайте задание, здесь нужно либо past pr continius либо past pr

Isabel (send) a postcard to the girl she (make) friends with while
she (attend) a language course.
17. They (run) out of petrol because Paul (use) the car several times
before.
18. When we (get) to the airport we (hear) that they (cancel) all the
flights.
19. When our teacher (see) what Tom (do) she (be) absolutely furious.
20. My old watch (work) very well for many years before I (drop) it.
21.1 (run) out of money but luckily I (be) able to borrow enough to get
home.
22.1 (have) to be early the next morning, so I (excuse) myself and
(leave) the party.
23. He (keep) his job although the manager (threaten) to sack him
several times.
24. When Mr. Gabb (come) out of the water, he (find) that somebody
(take) all his clothes.
25. After the movie (finish) they (decide) to get something to eat.
26. Many modern medicines were not invented by western scientists
but by tribal people who (use) them for generations before Europeans
(arrive).
27. It was not surprising that she (start) getting a bad toothache. She
(not/go) to the dentist for two years.
28. Her work (look) really neat because she (use) the computer.
29. The chairman's main fault was that he persistently (interrupt) the
speakers before they (finish).
30. After she (dress) and (eat) her breakfast, Linda (rush) off to her
office for a meeting with her accountant.
31. Peter already (see) that musical before he (read) the review about it.
32. When I (go) into the room I could smell cigarette smoke. Obviously
somebody (smoke) in there.
33. Because Jasper (make) an appointment with his dentist beforehand
he (hope) he wouldn't have to wait long, although there (be) a lot
of people in the waiting-room when he (arrive).
34. By the time Bill (leave) school, he (speak) good French and
German. When he (be) at university he (learn) Italian and Spanish.
35. Yesterday Jenny (send) me a very apologetic letter explaining why
she (not/do) what she (promise).
36. Ann only (work) there for a few days when she (decide) to leave.
37. The bank (tell) me last week there (be) no money in my account.
I (spend) it all.
38. The label (come) off the tin and I didn't know how to cook the meat.
39. When I (get) back after lunch, Jean (tell) me that somebody (phone)
when I (be) out.
40. They (get) married in 1990, just a year after they (fall) in love.
41. While I (try) to get my car started, a passing car (stop) and the
driver (offer) to help me.
42. Penicillin was discovered when Alexander Fleming (find) some
mould growing on a laboratory dish he (leave) beside the window.
43. David (admit) that he (hit) the other car, but (say) he (not/damage) it.
44. Jane (miss) the party because no one (inform) her about it.
45. It (turn) out that they (use) that business for quite a time as a screen
for their drug-dealing activities.
46. Hardly Harry (start) working when he (realize) that he (need) to go
to the library.
47. As Lucy (walk) home, she (try) to remember what (happen).
48. Because Sam and Tony (do) all the work themselves, they (be)
unwilling to give the results to John.
49. By the time Liz (be) eighteen she (study) English for six years.
50. Hopi Indians (raise) cotton to make cloth for centuries before the
arrival of Europeans in the American Southwest.
51. We (fly) for twenty minutes when the pilot (announce) we (have)
to go back because of bad weather.
52. By the time the last marathon runner (cross) the finishing line,
nearly everyone (go) home.
53. The house (burn) to the ground by the time the fire brigade (arrive).

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