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