English version

how should I know?/how am I to know?/how do I know?

From Longman Dictionary of Contemporary Englishhow should I know?/how am I to know?/how do I know?how should I know?/how am I to know?/how do I know?NOT KNOWused to say that it is not reasonable to expect that you should know something ‘When will they be back?’ ‘How should I know?’ know
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