In the afternoons, I usually stay and study in the classroom until 6:30, _______ most of my classmates have got home.
The media today can draw public attention to situations ______ help is actually needed.
This monument was built ______ the little hero.
—Have you made an apology ______ him ______ breaking his window? —Yes, I have.
Although they are good friends, Tom and Peter haven’t a thing in__________.
Vegetables _________ many kinds of vitamins and many other useful materials. We should eat them_________.