Isn't it right to put "the" in front of "darkest"? Is this sentence grammatically wrong?
This sentence is grammatically correct. It is okay to put "the" before "darkest" here, or omit it. "The" is omitted here because the sentence would sound repetitive with it. This sentence is also somewhat poetic, so having "the" before "darkest" would make the sentence sound too choppy.
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