◎ 题干
-Why was Mr.Smith unhappy those days?
-The only reason was that the theory he insisted on ____wrong.
[     ]
A.proving
B.being proved
C.proved
D.was proved
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“-Why was Mr.Smith unhappy those days? -The only reason was that the theory he insisted on____wrong. [ ]A.provingB.being proved C.provedD.was proved …”主要考查了你对  【动词的过去式】  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。