My father is ______his sixties, but he looks much younger.
As we all know, a dictionary is a book ______ gives the meaning of words.
—Have you known Mr. Smith for a long time?—Yes, since he ______ to our university.
I didn't manage to repair my car ______ you had told me how.
More than 70,000,000 sharks ______ for their fins every year. It's really time for us to do something.
—Lily doesn't mind lending you her dictionary.—She ______. I have already borrowed one.