Please fill the gaps with suitable words:
1. They have a very large house round ....... there are some lovely gardens.
(a) that (b) which (c) whose
2. I think you will see that this is the best museum ....... you can find in the town.
(a) that (b) which (c) who
3. Did you meet the lady ....... uncle works in the library?
(a) who (b) whose (c) who's