Use the information in the first sentence to complete the second sentence. Use all of/most of etc. or the…of + whom/which. Don't forget about full stops.
1. All of Mary’s brothers are married. Mary has three brothers,
2. Both of Jilia’s sisters are teachers. Julia has two sisters,
3. I went to a party - I knew only a few of the people there. There were a lot of people at the party, only