Q: If but we do don't we, can we say that "We do"?

A: yes

Q: If At dinner parties, people argue whether the kid who wrote bitch on a toilet stall in the middle-school bathroom should be expelled., can we say that "The school has yet to establish who wrote bitch on the toilet stall."?

A: it is not possible to tell

Q: If Joe Biden, D-Del., betrayed the No, I don't think we can negotiate with him--if you mean can we, in fact, work out something other than those minimal demands that were stated by NATO., can we say that "They do think negotiation with him is possible."?

A: no

Q: If While the NEPDG did provide some cost-related documents to GAO, most of these documents were not useful or self-explanatory., can we say that "NEPDG provided all cost-related documents to GAO."?

A:
it is not possible to tell