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    Mr. Smith is in good health now for it is quite a long time since he . A. not smoked B. smoked C. has smoked D. began to smoke 【查看更多】

     

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    Mr. Smith is in good health now for it is quite a long time since he __________.

    A. not smoked　　　　　　　　　　　　　　　　　　　　  B. gave up smoking

    C. has smoked　　　　　　　　　　　　　　　　　　　　  D. began to smoke

     

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    Mr. Smith is in good health now for it is quite a long time since he __________.

    A. not smoked　　　　　　　　　　　　　　　　　　　　  B. gave up smoking

    C. has smoked　　　　　　　　　　　　　　　　　　　　  D. began to smoke

     

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