Ответ:

1.went

2.was going

3.were you doing;was playing

4.came;were standing

5.were playing

6.was preparing;cut

7.went

8.did you go;went

9.did you do; translated

10.rang;was sleeping

11.was watching;fell

12.came;was doing

13.was going;met

14.rang;was helping

15.were walking;saw

16.came;was washing

17.was playing; found

18.was drawing;broke

19.met;was going

20.looked; were playing