. John's 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
. John's 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
D
考查强调句型。题干为强调句型，被强调部分为years of hard work，故选D项。