Open the brackets using the Past Perfect Tense.

1) My father had done the shopping by five o'clock.

2) When I came home, my mother had already cooked dinner.

3) I hadn't seen Sue for many years before I suddenly met her in the street.

4) Kate gave me the book which she had bought the day before.

5) Had you worked before you entered the institute?

6) When I came home, my sister had already got a letter from our granny.