One should keep ________ promise.
—You haven’t lost the ticket, have you?—___. I know it’s not easy to get another one at the moment.
—No, I’m afraid he isn’t in. This is his secretary speaking. Can I help you? —____
. —Let’s go and have a good drink tonight.—___ Have you got the first prize in the competition?
___ other good students, in my opinion, Tom is _____ student.
Professor Black has written some short stories, but he is ____ known for his plays.