1 had finished
2 bought
3 was talking
4 went
5 had already taken off
6 was raining
7 had broken down
8 had started
9 has happened ; burnt ; was making
10 did you go ; went
11was sitting ; had been working
12 were having
13 was waiting ; had been waiting
14 were you driving ; happened
15 wanted
16 had known
17 had walked
18 was fixing ; fell
19 had been playing
20 was blowing