Our attitude towards life is _____ makes the difference between our being happy and successful or not.
问题描述：
Our attitude towards life is _____ makes the difference between our being happy and successful or not.
A.that B.what C.which D.whether
whether为什么不行？后面不是有or not呗
答
What 是答案.在这里的 what 解做 （什么主要因素） 我们对生活的态度是_____使我们快乐和成功与否之间的差异.句子用了 difference,whether 就不用了.whether：Parents alsways concern whether we're happy and succ...