Our former teacher and her students are...1...a very dirty street now.Today,we are ready to...2...our street a clean and beautiful place again.After listening to our former teacher's instruction,we are..3..into groups.Each groups will collect the...4...,cut the grass and plant some more little trees at the position we are assigned to.Garbage and grass must be out into plastic bags and taken to the Garbage...5...by several members of the group.Two little trees will be...6...by each group and they must be watered everyday.Our teacher says that group that has...7...trees will be rewarded when the school year...8... 1 a,in b,at c,on d,from 2 a,make b,do c,paint d,sweep 3 a,decided b,divided c,dividing d,deviding 4 a,eggs b,stamps c,trees d,garbage 5 a,dump b,yard c,place d,area 6 a,cut b,planted c,collected d,bought 7 a,the weakest b,the smallest c,the shortest d,the biggest 8 a,finish b,will finish c,finishes d,finished