1、本课栏目开关Part OnePart Two本课栏目开关Part OnePart TwoAIn my opinion/view本课栏目开关Part OnePart Two本课栏目开关Part OnePart Twoplayed a major part inC本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart Twobe put/brought/carried intoin effectcome into/take effecteffect本课栏目开关Part OnePart TwoD本课栏目开关Part OnePart
2、 Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two去掉beenA本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart TwoIf necessaryB本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart Twoused toin order to/so as tocut downas a resultnow and thentake measures to do sth.deal withcare abouttake care ofliving conditions本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two本课栏目开关Part OnePart Two
