问题
选择题
It's the little boy ____ often helps others ____ wins the first prize. [ ]
A. who; which
B. which; that
C. who; that
D. which; which
答案
答案：C
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It's the little boy ____ often helps others ____ wins the first prize. [ ]
A. who; which
B. which; that
C. who; that
D. which; which
答案：C