◎ 题干
So far nothing ________ Tom.I want to know the reason ________ he hasn't written to me.  
[     ]
A.heard from;why
B.has been heard from;why
C.was heard from;that
D.has heard from;that
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“So far nothing ________ Tom.I want to know the reason ________ he hasn't written to me.[ ]A.heard from;whyB.has been heard from;whyC.was heard from;that D.…”主要考查了你对  【现在完成时的被动语态】【限制性定语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。