Rob: Have any aliens ever visited the earth?
Nancy: I believe the aliens have visited the Earth some people have met aliens.
Jimmy: Why do you believe that?
we know, not all stories about aliens are true— many are hoaxes (骗局, 谣言).
Nancy: I do believe it is true the
evidence (证据）that people provide just like the UFO. Rob: Well, I believe aliens haven't visited the Earth. Nancy: What's your reason?
Rob: you want to know the reason, let me tell you the main reason for it. Some of the evidence of aliens is not real, just people like imagining things.
Jimmy: I agree with you.
