Odpowiedź:
1.was sunbathing started
2.were drawing came in
3. arrived was waiting
4.rang was having
5. was working hurt
6.fell i was changing
7.collided was riding
8.was walking met
9.burnt was cooking
10 saw were going
11.cut was making
12.was doing broke
13.had was driving
14.were having arrived
15.found was cleaning
16.took were playing
17.was reading was listening
18.took off sat turned on
19 was doing came
20.opened were reading