it is your turn to be on duty.( )A so am I Bso it is CSo Iam Dso is it 闹不清

问题描述:

it is your turn to be on duty.( )
A so am I Bso it is CSo Iam Dso is it
闹不清

B. so it is.
so it is是对事实的一种肯定,表示“没错”或“就是这样”.