英语 have you ever thought of ____ people make books?(16 19:24:44)h_英语解答

英语 have you ever thought of ____ people make books?(16 19:24:44)
have you ever thought of ____ people make books?
A how
B what
C when
D where

人气：425 ℃　时间：2019-09-25 09:38:49

解答

a
表示人们是如何制造书籍的