C 是错的,应该是B
Ask KangKang to bring me some water.He (is leaving )in a minute.I will bring you some.
叫康康给我拿些水来.他正要走呢.我给你拿水吧.
is leaving 刚刚要走,正要走
如果说,他一分钟前走了,应该是：He left a minute ago.