Life is like a play; it’s not the length but the excellence of acting matters.A. which

问题补充：

Life is like a play; it’s not the length, but the excellence of acting matters.

A. which

B. that

C. who

D. what

答案：

A. which

(答案→)B. that

C. who

D. what

解析：考查强调句型。It is/was...that是强调句型，可以强调除谓语外的任何成分，去掉it is和that之后，句子还是完整的。本题的强调句型中包含了not...but...这个固定搭配。句意：人生像一个剧本，重要的不是长度，而是表演的精彩与否。故选B。