Question

he knows (write in present perfect tense)​

Answer 1

Answer:

$\huge{\blue{\underline\mathfrak{Here\: is\:your\:answer}}}$

He have known.

Explanation:

$<marquee>$

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╬═╬

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╬═╬

╬═╬

╬═╬☻/

╬═╬/▌

╬═╬/ \

Answer 2

Answer:

It is already in present perfect tense