Mrs Green has two children, Tom is seven years old, and Annie is only four.Tom goes to school.Annie doesn't.When Tom is at home, he often plays with Annie.Usually he is very nice to his sister.One day the two children are playing in the garden, then Annie begins to cry.Their mother runs over and asks,"Why are you crying?" "Tom breaks my toy horse," says Annie."How does he break it?" "I hit him on the head with it," says Annie.