Question

change into past perfect tense: i have never heard of a crystal cave​

Answer 1

Answer:

I have never heard of a crystal cave. (The question is already in past perfect)

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Answer 2

Answer:

I had never heard of a crystal cave.

Explanation:

The pluperfect, usually called past perfect in English, is a type of verb form, generally treated as a grammatical tense in certain languages, relating to an action that occurred antecedent to a contextually aforementioned time in the past.

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