. We have the most population in the world, and most of it _______ farmers.
He had a lot of friends, only a few of ______ invited to his wedding.
I met the fruit-pickers, several of _______ were still university students.
Her sons, both of ______ work abroad, will come back home this summer.
George, with _______ I played tennis on Sundays, was a warm-hearted person.
This I did at nine o’clock, after _______ I sat reading the paper.