Ответ:

.My friend was catching a ball.

3.My sister was climbing a tree.

4.My mum was talking to a friend on the phone.

5.A car was driving down the street.

6.Our dog was chasing the car.

7.My neighbour was cutting the grass.

8.The police officers were helping an old lady.

надеюсь что правильно, удачи!! :)