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题目内容
（英语语法）
2、 【单选题】
It is no longer a problem （）the poor children in this district can go to school.
选项
A:that
B:whether
C:so
D:because
It is no longer a problem （）the poor children in this district can go to school.
选项
A:that
B:whether
C:so
D:because
参考答案
