—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
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_________.
__________ is important to a person is ___________ he must know _________ he is fit for.