20. The choir stood in four rows according to their ____ heights A. respective B. respectable C. respected D. respectful <respective> respective 单独的,单个的 </respective> <respectable> respectable 表面上受人尊敬的,体面的 respectful 尊敬他人的 respected 品德上高尚的人,值得尊敬的人 suspect 怀疑 </respectable> |