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,  all of whom are married.

2. Kate hardly ever uses one of her computers. Kate has got two computers,  one of which she hardly ever uses.

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  a few of whom I knew.