题目内容
—Dear me! It’s you, Bob! I ______ to recognize you at first sight!
—Nor did I! Time has changed us a lot!
A. fail B. failed
C. have failed D. had failed
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题目内容
—Dear me! It’s you, Bob! I ______ to recognize you at first sight!
—Nor did I! Time has changed us a lot!
A. fail B. failed
C. have failed D. had failed