-you look hot and tired.-yas,___.A.I'm running B.I've been running C.I often run D.I had run
问题描述：
-you look hot and tired.-yas,___.A.I'm running B.I've been running C.I often run D.I had run
答
B 完成进行时,表示从过去某一时间点到现在一直在做某事,并很有可能继续下去.
I have been running,我一直在跑步