Without context? What do we have left? "have left" probably mean shave left behind, remaining. Probably means "what is remaining?" What is still to be done? What is remaining ... to be done ..after the other has been removed ... to be dealt with . OK, it seems we have most of an answer. What do we have left to answer? All stages seem to be complete. What do we have left to see this ship launched? . The storm has destroyed our house, all out belongings and property. What do we have left?

What do we have left? = What remains?

I have edited my post.

What do we have left? Can it be considered as a shorter form of "What do we have which/that has left?" But then I think it could also be "What do we have which/that HAVE left", what do you think? "What do we have which has left? ??? "What do we have that has left? ??? What do we have /that HAVE left ??? What do we have that HAVE left ??? Sorry not clear what any of your examples mean. Can you give some context?

Context?