В этом задании вы сначало переделываете предложения в времени. Затем составляете во предложения
И в заключении, составляете отрицательную форму
В утвердительном форме

1.we walked in the park.    did we walk in the park?     we didnt walk in the park.

2.they helped their parents.    did they help their parents?   they didnt help their parents.

3.they played the piano.     did they play the piano?     they didnt play the piano

4.they washed a new car.      did they wash a new car?     they didnt wash a new car.

5.he watched a butterfly.     did he watch a butterfly?      he didnt watch a butterfly.