past perfect, past simple 7 class

1. When I came back home, my brother .......... The house was empty.

2. I ..... .... from school by 3 o'clock yesterday.

3. The students had prepared for the lesson........ the teacher came in.

4. By 3 o`clock last Monday they.............. the task.

5. Before the doctor arrived, the man ...... the first aid to Ben

6. He had called me before I ......... him.

7. Last year he .......... 10 countries.

8. By the time we arrived, they ............. dinner.

9. I didn`t know she ............. the test.

10. Ann ...... her medicine before she started dinner.