I’m afraid he’s more of a talker than a doer which is he never finishes anything.A. thatB

问题补充：

I’m afraid he’s more of a talker than a doer, which is he never finishes anything.

A. that

B. when

C. where

D. why

答案：

A. that

B. when

C. where

(答案→)D. why

解析：考察表语从句。句意为他是一个空谈家多于实干家，这就是他为什么什么也没完成的原因。