动词的语态.1.Morefreetimeshould____forstudentsA.offerB.isofferedC.beofferedD.beoffering2.Thegovernmentannouncedthatschools___forthreedaysthenextweekA.willbeclosedB.havebeenclosedC.wouldbeclosedD.wouldclose3.Thewind

　　动词的语态.

　　1.Morefreetimeshould____forstudents

　　A.offerB.isofferedC.beofferedD.beoffering

　　2.Thegovernmentannouncedthatschools___forthreedaysthenextweek

　　A.willbeclosedB.havebeenclosed

　　C.wouldbeclosedD.wouldclose

　　3.Thewindowisterriblydirty.Iknow.it____forweeks

　　A.hasn'tcleanedB.didn'tcleanedC.wasn'tcleanedD.hasn'tbeencleaned