Someone help me with these wrong Sentences you must use past tenses.

1. Last winter they went skiing every weekend.
2. As a child I used to love Ice cream, but now I hate it.
3. It was raining heavily when we left the house.
4. She hadn't seen him for years.
5. He had been working there for two years before he moved offices.
6. The old house hadn't been painted for years.