I am really happy ______ you ______the party.
---Could you please come to the museum with me this afternoon?---Sorry, I ______ . I have to take a piano lesson at 2 pm.
---We can use MSN to talk with each other on the Internet.---Really? Will you please show me ________ it?
My brother used to _______ up late, but now he is used to _______ up early.
They are _______ little sheep that we can’t make much money by selling _______.
---Do you know how long ________? ----I’m sorry I don’t know.