题目

用 because, because of, as 或 since 完成对话。 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. 答案：【1】because【2】As【3】because of【4】Since【5】because

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