问题
选择题
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
答案
答案：D
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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
答案：D