1. There have been instances where butterflies flew hundreds of kilometers in a day.
2. There have been instances where butterflies fly hundreds of kilometers in a day.
I feel that sentence 1 is correct --- "flew" is the correct verb. But I cannot explain why. Could someone help me?
Flew Vs Fly
Moderator: Alan
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Re: Flew Vs Fly
'Have flown' is the most natural choice, but 'flew' would be acceptable.