Odpowiedź:
1 was listening to
2 was not sleeping
3 was cooking
4 were playing
5 was she doing
6 was snowing
7 was watching
8 were going out
9 was he working
10 were you reading
11 were cleaning
12 was not studying
13 was writing
14 were they quarrelling
15 was doing
16 was watching
17 was working
18 was waiting for you
19 were having
20 Was it raining