Much______(do)now by the government to improve our environment

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Much______(do)nowbythegovernmenttoimproveourenvironmentMuch______(do)nowbythegovernmenttoimproveoure

Much______(do)now by the government to improve our environment
Much______(do)now by the government to improve our environment

Much______(do)now by the government to improve our environment
应该是填to be done句意,为改善环境,现在有很多事情等着政府去做.而不应该是现在完成时,因为完成时常接“一段时间”作为时间状语,本句中如若在now前加by,则可考虑完成时.故此觉得用不定式表将来较为稳妥.

done

has been done

has been done