People don't know__________.A who we are B what you to C how to do D what to do

问题描述:

People don't know__________.A who we are B what you to C how to do D what to do

c

应该选D

d .a 应该是whom .b 错误形式.c ,应该是how to do it ,(do 后面缺宾语.

D
人们不知道该怎么做