Since I have read quite a few English books, I know __________ words and phrases, of which the majority __________ been found in our textbook.
—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
The reason for his success is ______ he worked very hard.
-How do you like our restaurant?-I can’t find a ________one.
The manager meant _______the workers that being 5 minutes late meant____ the company.
His illness ________ his absence.