1) He borrowed one of my books.
2) It was one of our ideas.
3) Will you show me one of your photos?
4) The phote belongs to her.
5) I have got more photos than she has. They are more interesting than mine.
6) Some of our friends came to see us.
7) Your ticket is on the table. Is it her ticket there too?
8) Tom, you must cook breakfast by yourself.
9) Tom and Jonathan, you must cook breakfast by yourselves.
10) Tom and Jonathan must cook breakfast by themselves.
11) What colour is your uncle`s car?
12) Which is the cheapest way to travel?
13) Eggs are cheaper than stak.