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Suppose three sentences:
1- I have eaten lunch.
2- I have slept.
3- I have come here.
Is it right to say: 'I have eaten lunch, slept and come here.'?
What about 'I have eaten lunch, have slept and have come here.'?
Both sentences you suggested are correct, but the first is probably more "correct", as the repetition of the haves in the second is unnecessary because the haves are understood from the first action (e.g. have eaten lunch).
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