Відповідь:

2) When we had bought some chicken, we made dinner.
3) When my parents had gone out, I got home.

4) After the sun had come out, we arrived at the beach.

5) After I had taken my bike apart, I cleaned every piece.

6) When it had got dark, we arrived at the hotel.

7) After I had spoken to my dad, I applied for the job.

8) When she had read the letter, she began to laugh.