题目内容
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[单选题]
I’m not sure whether I can gain any profit from the investment, so I can’t make a（n)
A.which
B.where
C.whether
D.when
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.which
B.where
C.whether
D.when
如果结果不匹配，请 联系老师 获取答案
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