分词作状语问题The lady walked around the shops,----an eye out for bargains.A.keep B.kept C.keeping

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分词作状语问题The lady walked around the shops,----an eye out for bargains.A.keep B.kept C.keeping
The lady walked around the shops,----an eye out for bargains.
A.keep B.kept C.keeping D.to keep
想问我 能否选D to kppe 做状语表示为了看看便宜货的意思 是不是语法错误还是翻译不通(我觉得可以翻成为了做什么)
教教我

不是的.to keep 是不定式,不定式作状语除了表目的,常常还是表将来的动作,即还没有发生的动作.而keeping则是表伴随,就是说目光紧跟着……