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20. “what makes her so unhappy?” “____ one of her favorite books.”A. Because she lost B. Because of her losingC. She lost D. Her losing正确答案为D,为何不B,请讲解!

题目详情
20. “what makes her so unhappy?”
“____ one of her favorite books.”
A. Because she lost B. Because of her losing
C. She lost D. Her losing
正确答案为D,为何不B,请讲解!
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答案和解析
WHY 提问才可以用BECAUSE回答
这里是WHAT提问,所以不用BECAUSE