Multiple choice

Directions: Choose the correct word(s) from the options given below.

He could never have known the secret unless you _____ him.

  1. had told it to

  2. tell it to

  3. told it to

  4. will tell it to
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 "had told it to" is the correct answer. When the main clause uses could have + past participle, conditional clause is in past perfect.

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