John promised his doctor he not smoke. and he has never smoked ever since. A.might B.should C.could D.would 答案 D 解析 句意为:约翰答应医生他不再吸烟.从那以后.他再也没有吸过烟.由句意可知空格处表示允诺.故应选 择D项. 查看更多

 

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