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John was fired by his factory and only then how wrong he was to be lazy and care

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John was fired by his factory and only then how wrong he was to be lazy and care

John was fired by his factory and only then _________ how wrong he was to be lazy and careless.

[]A.

had he realized

B.

he had realized

C.

did he realize

D.

he realized

试题答案

答案:C