摘要：( ) A. Yes, I am. B. Who are you? C. Who's that calling? D. Yes, you should 6.( ) A. You don't. B. No, smoking. C. I am afraid you can't. D. It's bad for your health. 7.( ) A. Yes, you must. B. It doesn't matter. C. Don't hurry. D. Yes, you need. 8.( ) A. No, I haven't. B. The sane to you. C. I am sorry. D. Thank you for your advice.

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