-- you do I will support you. - Thank You. A Whenever B However C Whoever D Whatever

问题补充：

-- you do, I will support you. - Thank You.

A Whenever B However C Whoever D Whatever

答案：

解析：

本题题意为无论你做什么，我都会支持你，故用whatever（无论什么……都），此时相当于no matter what。Whenever表示不论何时；However无论如何；whoever表示不论是谁。