.

—May I remind you that a Mr. Zhang is waiting downstairs, sir?

—Oh, dear. I ________ about it.

—May I remind you that a Mr. Wang is waiting outside, sir?

         —Oh, that’s right. I ________about it.

   A．forget  B．had forgotten    C．forgot         D．have forgotten

—May I remind you that a Mr. Wang is waiting outside, sir?

       —Oh, that’s right. I      about it.

   A．forget                   B．had forgotten       C．forgot                 D．have forgotten

--- May I remind you that Mary is waiting outside, sir?

   --- Oh, that’s right. I ______ about it.

      A. forget               B. forgot           C. had forgotten   D. have forgotten

  —May I remind you that a Mr. Wang is waiting outside, sir?

       —Oh, that’s right. I      about it.

   A．forget B．had forgotten   C．forgot       D．have forgotten