Itseasiertogodownhil的精选

问题详情：完形填空   It'seasiertogodownhillthantoclimbuphill,soit'seasiertofallintobadhabitsthanintogood  1 .Badhabitsdonotcome 2 .Theycomelittlebylittle,soyoudon'tknowtheir 3 .Schoolboysfi...