选择题：Until then, his family __________ from him for six months.

题目内容：

Until then, his family __________ from him for six months.

A.didn't hear B.hasn't been hearing C.hasn' t heard D.hadn' t heard

参考答案：
答案解析：

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In writing, which step is used to get students to think freely and put down a...

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In a listening class, a teacher asks students to listen to the material caref...

In a listening class, a teacher asks students to listen to the material caref...

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All things__________, the planned trip will have to be called off.A.considered

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均匀量化时，大信号的最大量化误差（未过载）N1与小信号的最大量化误差N2比较，有关系（）A．N1>N2B．N1=N2C．N1<N2D．无法确

均匀量化时，大信号的最大量化误差（未过载）N1与小信号的最大量化误差N2比较，有关系（）A．N1>N2B．N1=N2C．N1<N2D．无法确定

分类： 英语学科知识与教学能力  题型：选择题
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Which aspect do students focus on when they learn the usage of vocabularyA.Spell

Which aspect do students focus on when they learn the usage of vocabularyA.Spell

分类： 英语学科知识与教学能力  题型：选择题
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