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possibility is to follow Chomsky ( 199 5) in supposing that Q is affixal in nature, and attracts an overt head
to attach to it. Since affixes generally only attach to a particular kind of word (e.g. ... questions. Adapting an analysis dating back to Baker
( 197 0), let’s suppose that in main clauses, an interrogative C is filled by a null question particle Q, and
that Q attracts an auxili...