Irve gbeen working on the railroad Irve gbeen working on the railroad; I've been working on the railroad I've been working on the railroad; I`ve been working on the railroad; 22.I've been working on the railroad I’ve been working on the railroad (我曾在铁路上工作) I've Been Working on the Railroad(我一直工作在铁路) We are walking on the road Workin' on the railroad