The old man has two sons,________is a soldier.
It is ordered that a new bridge ______ over the wide river.
______ it ______ for your help, I couldn’t have made any progress.
—Did you go swimming last Sunday?—No. We would have gone ______ nicer.
—Do you think the thief entered through the window?—No, if he had, I don’t believe, _______ broken the living-room’s window.
If he ______ it, he _______ it.