题目

If you really want yourself to be in good health, you must ___ always ___ so much. A. not; be smoking    B. not; have smoked   C. not; to smoke    D. be not; smoking 答案：A 解析: must not always be doing sth. 表示“不要老是做谋事”，含有埋怨、指责、反感等感情色彩。

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