1. Steve ate the apple which he had bought in the shop
2. We had washed the dishes before father came home.
3. Helen had switched the lights off before she went to bed.
4. Den had read books before he passed the exam
5. I opened the window after I had cooked dinner
6. She finished to cry when her mother gave her the toy.
Объяснение:
past perfect указывает на действие, произошедшее раньше другого в .
на это указывают слова: before, after и т.д
