The pandemic has exposed how threadbare the state has become.
In the sentence above:
threadbare is a predicative complement, a fronted one, in the subordinate clause how threadbare the state has become;
how is an adverb of degree modifying the adjective threadbare in the subordinate clause;
how threadbare the state has become is an indirect question and complement of the predicator has exposed.
Am I correct?
Looks good to me. CJ
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