"Hi,Mrs.Grady," said Mark when their neighbour opened...
根据第一段中的"Shoveling was Jamie's idea,a way to earn enough money for the new Ocean Kingdom video game that came out the next day" "清理是杰米的主意。为第二天推出的新海洋王国电子游戏赚足钱的方法",可知,Jamie 和 Mark 计划为 Mrs.Grady 清理雪是为了挣零花钱,...