Successwouldneverhap的精选

问题详情：Successwouldneverhappenovernight.Youhavetostudyhard________.A.handbyhand   B.onebyone   C.wordbyword   D.stepbystep【回答】D【解析】句意：成功不会一蹴而就，你必须一步一步地努力学习。handb...