1-5ADBCD 6-10ACBDB 11-15ACABA 16-20DBDAC 21-25BACAC 26-30BABDA 31-35DBDAB 36-40CDACB 41-45DCBAC 46-50ABDAC 51-55DCADB 56-60DACBC 61-65CDGFE 66去掉was 67past改为passed 68he改为she 69正确 70after改皮肆庆为before 71how改为why 72by改为with 73on后燃握加the 74couldn"t改为can"雹好t 75peoples改为people