We should plant more trees to make the air _(clean). Jane is my good friend.She is always _(help). 将所给单词的适当形式填入横

分类: 作业答案 • 2021-12-29 16:28:07

问题描述：

We should plant more trees to make the air _____(clean). Jane is my good friend.She is always _____(help). 将所给单词的适当形式填入横线中.

答

cleaner

helpful

We should plant more trees to make the air _____(clean). Jane is my good friend.She is always _____(help). 将所给单词的适当形式填入横