Keeping a pet at home is ( ) . a.a great fun b.great fun c.great d.funny
问题描述：
Keeping a pet at home is ( ) . a.a great fun b.great fun c.great d.funny
答
Keeping a pet at home is ( great fun ) .为什么？？？fun当“乐趣”解时，一般前面不加冠词。