Life is like a talematters is not how long it is but how good it is. A. WhichB. ThatC.

问题补充：

Life is like a tale. matters is not how long it is, but how good it is.

A. Which

B. That

C. What

D. Whose

答案：

A. Which

B. That

(答案→)C. What

D. Whose

解析：C 连词名词性从句。What matters是主语从句，what在句中做主语，which含有疑问意义，that不做成分，whose常作定语。