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Yesterday at school we had a very funny story. I and my friend Mary didn't do our homework, so we decided to say that our teacher hadn't given us any homework.
At the break we met her. She asked if we had done our homework. We said that she maybe mixed something, because she hadn't given us homework. She laughed and said that she remembers giving it. And suddenly Mary's friend Tom appeared and said to the teacher that the homework had been very easy.
The teacher gave us a bad mark.