Rewrite the given sentences without changing the meanings

Rewrite the given sentences without changing the meanings
1. Jack guided me on how to use the app last week.
→It was
2. They lent me 20 million to buy a new house.
→It was
3. We can't go to Julia's party because we're going away that weekend.
(using SINCE)
→ We can't
4.Minh asked Hung to skip class to go to the park but Hung did not agree. (using HOWEVER)
→ Minh asked .....
5.Minh won the first prize in the English contest, and his friend congratulated him on this.
(using perfect gerund after a preposition)
→ Minh's friend congratulated him
6. Hoa won the first prize in the singing competition, and she is very proud of it.
(using perfect gerund after a preposition)
→ Hoa is very proud