,Unit 2 Ill help to clean up the city parks.,Part 4 Section B(课前) 目标预习，自主学习,give him orders,help disabled people,a big difference to,C,D,D,B,A,write to let sb. do sth. be able to do sth. thank you for doing sth. set up,help disabled people make a difference think about a friend of mine for example,cheer me up be excited about change my life because of your kindness at once,D,ran out of water,is similar to Marys,B,D,takes after his father He looks like his father,D,B,A,made a big difference,D,B,eyes,about,an,years,hurt,people,him,dog,cheer,volunteer,