问题
选择题
______stopping polluting the earth______hope to live in a better environment．
A．Only to；we Call
B．Only to；can we
C．Only by；can we
D．Only by；we can
答案
答案：C
搜题请搜索小程序“爱下问搜题”
______stopping polluting the earth______hope to live in a better environment．
A．Only to；we Call
B．Only to；can we
C．Only by；can we
D．Only by；we can
答案：C