I’m completely at a loss the know what to do next,what shoul

I’m completely at a loss the know what to do next,what shoul 1.I was at a loss,___ (puzzle) about what to do next. While I was at a loss what to do, I'm at a loss as to what to do and feel lost I'm completely at a loss I really don't know ( ).A.what to do the next B.what to do i I do not know what I can do about it.I am completely at a lo I am at a loss what to do 中what to do 做什么成分 at a loss for what to do ,at a loss what to do都可以吗? what shoul I do? what shoul i do 英语翻译I am still at a loss whether to believe it & what to do