Ответ:

1 I had lunch after mum had cooked the soup.

2 You had given me a good advice before I took a final decision

3 It had been sunny before the cyclone came to the city

4 Tim had fallen asleep before the film finished

5 Rachel had made an appointment to see her doctor before I invited her

6 We had departed before the storm began

7 Nick had taken the cat before his friend gave him a puppy for his birthday

8 She had bought this dress before she saw a more beautiful one in the other shop

9 Katie had studied a lot before she passed the exam

10 His sister had got up before the sun rose