why not go to the Great Wall this Saturday?

题目

why not go to the Great Wall this Saturday?
i an afraid it is not a good (),many of us have been there.A,place B,day C,plan D,idea plan可不可以?

答案

good plan是一个好的计划,在这里主要是对方给你的建议：这个星期六去长城,所以通常是说是个good idea 好提议,好点子.不可以用plan