题目

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 The relationship betweenparents and teachers is important in the development of a child. The goodcommunication between them is communication that says, I care about my child,and I value school. The best way aparent can show how much he or she values learning is by sending a preparedchild to school every day. Once a child gets behind in class, catching upcan be difficult.Parents and teachers are partners in student development. A schoolcommunity is built on relationships 单价＝总价×数量（______）