Select the option that best fills the blank with the correct tense:
If I _________ the answer, I would have told you.

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A know
B known
C had known
D knew

Show answer and explanation

Answer: C. had known

This is a third conditional sentence (Past Unfulfilled Condition). The structure requires "If + Past Perfect" (had known) in the first clause and "would have + past participle" in the second.

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Select the option that best fills the blank with the correct tense: If I _________ the answer, I would have told you.

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Select the option that best fills the blank with the correct tense:
If I _________ the answer, I would have told you.