连词成句 first,to,the,why,know,we,need,to,anomals,problem,is,protec...答:The first problem we need to know is why to protect animals 我们需要知道的第一个问题是为什么要保护动物。That is very nice of you.对你那是很好的,People will grow bamboo in the forest 人们将会在森林里种竹子。We must not pollute rivers.我们不准污染河流。