问题
选择题
—There are many volunteers _____ are helping the children in Sichuan.
—And most of them are college students. [ ]
A. which
B. when
C. whose
D. who
答案
答案：D
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—There are many volunteers _____ are helping the children in Sichuan.
—And most of them are college students. [ ]
A. which
B. when
C. whose
D. who
答案：D