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Prepositions
He is ignorant ___ what he pretends to know?
Correct answer: A
Explanation and memory cue
The correct preposition to use with 'ignorant' when indicating what someone lacks knowledge about is 'of'. The phrase should be 'He is ignorant of what he pretends to know.' However, since 'of' is not provided as an option, none of the given options (to, with, on, from) are correct. The question is flawed because the correct preposition 'of' is missing. The best correction would be to replace option A with 'of' and mark it as the correct answer.