Ответ:

1)had been doing

2) was doing

3)Had made

4)had been making

5)made; worked

6)was doing; had parked

7)was making 

Ответ:

1) was doing homework

2) did the shopping

3) Had her sister made a cake

4) was making

5) made dinner … was working in the garden

6) did … was parking

7) Did she make