e. ). For singular countable nouns, an article ( a/an/the jacket ) is always needed, unless it is replaced by a demonstrative ( this jacket ) or a possessive ( your jacket ).
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Mister MicawberMM, is there a rule for that?
In your case, the plural igloos recommends the plural verb:
Who live in igloos?
Who lives in an igloo?
Is this a British/American distinction, or am I just really wrong on this one??