_____ Lily _____ Lucy may go with you because one of them must stay at home.
--How about your English? --I found ________ hard to learn it well.
He looks upset. He doesn’t know ________.
Mrs. Smith eats _______ meat, so he is ________ fat now.
There are about two ________ students in the new-built school.
--Peter, don’t play that kind of jokes any more? --Sorry, I ________ do it again.