. John's success has nothing to do with good luck. It is years of hard work has made him w

问题补充：

. Johns success has nothing to do with good luck. It is years of hard work has made him what he is today.

A. why

B. when

C. which

D. that

答案：

A. why

B. when

C. which

(答案→)D. that

解析：可联系答.案.网客服索取。