The bell rang and the class was classroom became students went out of the classroom.I was just chatting with some of my classmates when Li Hong came to smiled and said to me, "What's four minus four? Do you know?" "It's is easy." answered I.
But Li Hong shook her head and said "It's 's eight." "Why? That's impossible!" "You will understand if you cut down four corners of a desk." said Li Hong."Is that a joke?" "Oh, yes." We all ng the class break, we had a good often have a pleasant break.