--- Can I have a talk with you at about 5 this afternoon Mr．Smith?--- All right I to my

问题补充：

--- Can I have a talk with you at about 5 this afternoon, Mr．Smith?

--- All right, I to my office from a conference 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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