Using preposition+ whom/ which/ whose

USING PREPOSITION + WHOM/ WHICH/ WHOSE
1. I don't like the flat. My grandparents are living in that flat.
--> I don't like the flat.........
2. This is the book i got this piece of information from.
--> This is the book from ...................
3. I must thank the people. I got a present from them.
--> I must thank the people from .............
4. The Sale Manager is a young woman we have great confidence in.
--> The Sale Manager is a young woman in ......................
5. Laguna Beach was the most intering town where we stayed.
--> Laguna Beach was the most intering town in ..................
6. I was telling you about the club, and it's called the Palace, I've rememberd.
--> I've rememberd! The club about ..................
7. They are living in a city with a population of 14 milion.
--> The city in ....................
8. The girl I received a card from was someone i met during my vacation.
--> The girl from ..............
9. We got married on a bright sunny Sunday
--> The day on ..................
10. The movie that we saw last week was much better than this one.
--> The movie to ..............
11. The waiter expected a large tip. He served us.
--> The waiter by ..............
12. I don't know the reason why she was sacked. (which)
--> .........................
13. I'll introduce you to a girl. Her name is Helen.
--> The girl to ..............
14. The film was very interesting. We are talking about that film.
--> The film .....................