问题
选择题
_____is known to us all is that we should do as much as we can ______ stop the pollution of the environment.
A．It; help
B．What; to help
C．As ; to help
D．That ; help
答案
答案：B
搜题请搜索小程序“爱下问搜题”
_____is known to us all is that we should do as much as we can ______ stop the pollution of the environment.
A．It; help
B．What; to help
C．As ; to help
D．That ; help
答案：B