It is known to as ___there is pollution ,there is harm.a.thatb.wherec.whatd.that where---b,why is not d
问题描述：
It is known to as ___there is pollution ,there is harm.
a.that
b.where
c.what
d.that where
---b,why is not d
答
1. 楼主打错,as要改成us
2. 答案有错,应该选D
3. that引导真正的主语从句.
在这个主语从句中where引导一个地点状语从句
还原句子: That where there is pollution, there is harm is known to us.
答
Where
答
where 根据where there is a will there ia a way