( ) what way did he work out the physics A.In; question B.In; pro_英语解答

( ) what way did he work out the physics A.In; question B.In; problem C.By question,
D By,problem

人气：128 ℃　时间：2020-02-03 17:51:35

解答

B
in 表示用什么方式方法,way 方法.in this way 用这种方法.
work out 解决,算出.表明是难题用 problem