语法与词汇 16.______you are swimming, running, or practicing yoga, regular exercise can make for a great night's sleep.
【正确答案】 D
【答案解析】whether…or…为固定搭配。句意：无论你是游泳，跑步，还是练习瑜伽，有规律的锻炼都能让你睡个好觉。故选D。