Exercise is good for you,but most people really know very little about how to exercise properly.51 w

题目

Exercise is good for you,but most people really know very little about how to exercise properly.51 when you try,you can run into trouble.
51.A.While B.When C.As D.So

答案

锻炼有益于你,但是大多数人真的不太知道如何正确锻炼身体.