Odpowiedź:
Zad 1
2 was flying
3 were waiting
4 were crossing
5 was washing
6 was slicing
Zad 2
2 was surfing
3 was taking
4 called
5 took
6 stole
Zad 3
2 were playing / came
3 was running / heard
4 was cleaning / shouted (opcjonalnie was shouting w znaczeniu, że non-stop krzyczał)
5 broke / was doing
6 was waiting / arrived
Zad 4
2 when
3 when
4 while
5 while
6 when
Wyjaśnienie: