do you think___ important to keep our environment clean?A、it B、that C、this D、one 应该选哪个
问题描述:
do you think___ important to keep our environment clean?A、it B、that C、this D、one 应该选哪个
答
A
do you think是插入语
It is important to keep our environment clean.
[it 作先行代词,引导作为逻辑主语或宾语的从句]: