Resposta: A) I did not was sleeping
B) your sister and you did not were in the park
C) Paulo, fred and I did not were dancing
D)the cat did not was playing the ball
E) Your mother did not was cleaning the house.
Explicação:Na forma negativa do simple past basta acrescentar a negação no verbo de ação "do", que está no passado portanto fica "did".
Lembrando que a forma contracta é a mais usual, onde usamos o "didn't" e "doesn't". Mas se vc quiser pode usar da maneira normal:) espero ter ajudado
