–Mr Zhu can I go to meet you at four tomorrow afternoon?–All right I to my office from

问题补充：

–Mr Zhu, can I go to meet you at four tomorrow afternoon?

–All right, I to my office from a conference by then．I will be waiting for you there．

A. have come back

B. will come back

C. will have come back

D. will be coming back

答案：

A. have come back

B. will come back

(答案→)C. will have come back

D. will be coming back

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