I know that it will be difficult to pick him out in such a crowd, but if you ________ happen to see him, give him this packet.
The news _____ the prime minister will pay a visit to our school next week has not yet being confirmed.
The old lady likes to keep things in the house, _____ throw them away, though many are useless.
Hurry up, boys. Only at this rate _____ able to afford a holiday.
My cousin Jim didn’t _____ himself at the party and thus left a very bad impression _____ the guests.
—Mary has caught a bad cold. —Has she? I regret _____ her to put on more clothes yesterday.