Mr. Johnson has given up ________.
—Listen! Is that Millie singing? —No. It _____ be Millie. She has gone to Beijing.
— I don’t know ________ to deal with this problem. — Why not ask your teacher for help.
-- Thanks for offering me_________ useful advice! --__________.
I think this piece of music is worth_______.
If you have difficulty something,wearing red it easier for you to take action.