you__so much ,you are wasting your money A oughtn't smoke B oughtn't to have smoked C oughtn't have smoked D oughtn't to smokedD选项是smoke

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you__somuch,youarewastingyourmoneyAoughtn''tsmokeBoughtn''ttohavesmokedCoughtn''thavesmokedDoughtn''ttos

you__so much ,you are wasting your money A oughtn't smoke B oughtn't to have smoked C oughtn't have smoked D oughtn't to smokedD选项是smoke
you__so much ,you are wasting your money
A oughtn't smoke B oughtn't to have smoked C oughtn't have smoked D oughtn't to smoked
D选项是smoke

you__so much ,you are wasting your money A oughtn't smoke B oughtn't to have smoked C oughtn't have smoked D oughtn't to smokedD选项是smoke
B ought to是情态动词组 意思是应该 其后可接动词原形 表示应该做某事 也可接have done 表示原本应该做某事(而实际没做) 用来表达遗憾或者惋惜的情绪 A/C选项结构就是错的
根据后半句话的意思 你正在浪费钱 说明你还在吸烟 所以前半句表示你本来不应该吸烟的