初中英语派生法试题

Our four﹣week Earth Camp is a fun and 　     　 summer camp for children aged 6 to15 Kids enjoy time outdoors while learning about the earth. （ education ）

A Christmas Carol was written to make every reader think about how they could make a 　   　 to their society. （ different ）

Li Bai and Du Fu, two of the greatest poets in Chinese history, formed a ________ friendship. (last)