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从方框中选择最佳选项完成对话，有两项多余。
Tony：Hello,Lucy．I haven't seen you for several hours．Where have you been?
Lucy：Hello,Tony． 1 ．And I have found some information about the universe．
Tony：Really?Would you like to tell me some?
Lucy：Of course．What do you want to know?
Tony：Well 2
Lucy：Millions of years．
Tony：Wow!So long． 3
Lucy：Not yet．But they have discovered water on Mars．
Tony：That sounds very interesting．Have they found life on Mars?
Lucy：No,they haven't．And scientists have already found that there's no life on the moon．
Tony： 4
Lucy：Yes,that's right．Oh,I want to return the book about the journey to space to Jack,but I can't find him．Where is he,do you know?
Tony： 5 ．You can find him there．
Lucy：Thanks a lot．
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