问题
选择题
It is no longer a problem _______ the poor children in this district can go to school.
A．that
B．whether
C．so
D．because
答案
答案：A
句中it是形式主语，代替 that引导的主语从句。
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It is no longer a problem _______ the poor children in this district can go to school.
A．that
B．whether
C．so
D．because
答案：A
句中it是形式主语，代替 that引导的主语从句。