“_______ the way,”said the instructor,“don’t do everything ________ the way others do, or else you can’t stand on your own feet.”

A.By; /

B.In; in which

C.By; by

D.On; in

答案及解析： A

解析：

by the way“顺便说一下”，in this/that way中的介词in有时可以省略。