In Star Trek III, Kruge asks {vaj Daleghpu'?} Valkris answers {HISlaH jawwI'} even though it wasn't a {-'a'} question.
Star Trek V has a line spoken by Klaa that goes {'entepray'? qIrq Duj 'oH.} It might be an exclamation rather than a question, though it's phrased kind of like a rhetorical question.
When Klingon is spoken, the grammar is a bit more lax than what's stated in TKD. According to the rules, you'd have to say {pu'meymaj DISop'a'?}, but if you said {pu'meymaj?} it would be acceptable spoken Klingon.
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De'vID