https://online2.tingclass.net/lesson/shi0529/0001/1240/16-2.mp3
https://image.tingclass.net/statics/js/2012
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>
