问题

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;
B:when;
C:which;
D:that;
正确答案是:
同类题型
I can’t go to the meeting ______, but I’ll send someone to speak for me.
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I regret ______ to my head teacher,not listening to him.
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