—Look at the triangle on the right, if AC=3 , BC=4 , how long is AB?
—It’s ______.
five
seven
twelve
Who does this T-shirt belong________?
This book______Tom’s,because his name is on the book.
______should not be______to go out at night.
—____do you improve your English? —I improve it___listening to tapes.
----Could you please sweep the floor? ---_____________. I have to do my homework first.
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