ChokweSelassie,aged13,isworkinghardtohelpdriversavoidpo...
问题详情：ChokweSelassie,aged13,isworkinghardtohelpdriversavoidpotholes(坑洼).Theeighth-graderwasinspiredtokickoffhiscreationonarecentmorning,whenhismotherwasdrivinghimtoschool.Theircarwasdamagedasitwen...