参考答案1-5：CADCB6-10：CADAC11-15：BABCD16-20：BADAC21-25：BCABA26-30：BCACD31-35：CACBD36-40：CDCBA41、two42、if you've left is behind43、To your smartphone44、soon45 YES46 On the internet47 About 15 pounds48 Her grandma49 They were polite,but a little

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