短文改错： most families in china hoped their single children will have a happy future, so they are very strict in their children. so do teachers in schools! many children are given so much homework that they have hardly any spare time have sports. the children are forbidden to do something but study. no wonder so many children are tired for lessons. some even attack or kill his parents and teachers! i believe many people have already read this kind of newses in newspapers or magazines.
