—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
By the time he was 38, he had become ________ principal of ________ university.
-- Thanks for your trouble. -- Not at all. I'm _______ pleased to help you.
Mother Teresa had the ________ of winning the Nobel Peace Prize for her great ________ helping the poor.
I won't go to his party next time. It couldn't have been ________ in fact.
How much of the city have you _________ since you came to work here?