--- Is that your backpack? --- __________. It’s my backpack.
I ______ go to bed______ my mother came back home.
---She’s never been to Hainan, ________? ---________. She went there last week for the first time.
---Why did you buy a radio? --- ______ English.
---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?