Peter can you come downstairs and do me a favor?Yes mum. I .A. came B. come C. am coming

问题补充：

Peter, can you come downstairs and do me a favor?

Yes, mum. I .

A. came B. come C. am coming

答案：

解析：由问句知用将来时态。表示地点转换的动词可以用进行时表示将来。