so if this means 'what do our citizens ask', how do you say 'what do they ask our citizens'?
The point is that "chiedere'" is a transitive verb and needs an object (a thing, for example, a question). "Chiedere a" or "chiedere su" or "chiedere di" is intransitive and is completed by a person (with about/of/for). Without the preposition, "i nostri cittadini" must be the subject. Siebolt is right.
Yet another word I've never seen but has appeared in the strengthening exercise!
... by posting the question here and hoping someone will answer. Usually somebody does.
Sharing a thought as a classmate if I may, in English "What say you?", "How goes it?" (and even "How are you?") have the same word order as the Italian sentence here. But to find a rule, for English, of what the emphasis is I think there will be differing opinions (mine would be that the first word is what comes to mind first for the speaker as the topic). Not seeing it as different to English I feel it easy to comprehend the Italian meaning readily. I hope this may help some learners a little.
It would be useful in this system to use such a predictable mistake as a learning opportunity, perhaps to detour to a relevant section, or at least provide a pop-up explanation.