填空题 From his appearance we may safely 1 that he is a heavy smoker.
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【正确答案】 1、conclude    
【答案解析】解析: From his appearance(外表) we may safely(确实地) conclude(推断) that he is a heavy (重的/大量的)smoker. 从他的外表我们可以得出结论,他是一个烟鬼