题目

根据句意,选用方框内的词组填空。注意形式的变化。add up, take part in, take action, make a difference, cut down,be good for, hear of, be harmful to, pay for, begin with （1） The students air pollution by walking to school last term. （2） Your help has . I understand the work better now. （3） All the people in the kingdom the magic cloth before the king saw it. （4） Pollution our health. So we must protect our environment. （5） “The food you though it tastes awful,” my mother said to me. （6） Last Friday w在没有指向标的地图上，通常采用“________”的规定确定方向．