Nobody could have failed to notice the fact thaten

发布时间：2021-03-05 14:07:30

Nobody could have failed to notice the fact thatenvironment have bee a grave problem with which modern citizens areconfronted.With the development of industry andagriculture,cars give off poisonous

网友回答

要加一个problem,另外需要把后面的have改成has.其余无语法错误.
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