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  3. ______ what you intended, I should not have wasted my time trying to explain matters to you.

______ what you intended, I should not have wasted my time trying to explain matters to you.

admin2009-08-21  94
问题 ______ what you intended, I should not have wasted my time trying to explain matters to you.
选项 A、If I realized
B、Did I realized
C、Were I realized
D、Had I realized
答案D
解析 对过去情况的虚拟，用过去完成时，if I had realized，此句又可省略if，并把had放于句首，构成选项D。
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