U2Ix27llhelptocleanupthecityparks.重点短语和句子

U2SA一．重点短语1.cleanupthecityparks清扫城市公园2.visitthesickkids看望生病的孩子们3.cheersbup=cheerupsb(使某人)变得更高兴;振奋4.giveoutfoodatthefoodbank在食品救助中心发放食物5.volunteertodosth.志愿/自愿做某事6.anafter-schoolstudyprogram课外学习活动（项目）7.comeupwithsth.=thinkupsth.想出；提出8.putoffdoingsth推迟;延迟做某事9.putupsigns张贴标示/标志10.makesomenotices制作些公告牌11.handsth.out=g...