—May I remind you that a Mr. Zhang is waiting downstairs, sir?
—Oh, dear. I ________ about it.
A.forget | B.forgot | C.have forgotten | D.had forgotten |
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—May I remind you that a Mr. Zhang is waiting downstairs, sir?
—Oh, dear. I ________ about it.
A.forget | B.forgot | C.have forgotten | D.had forgotten |
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