( )you should ______do the work well. A.be able to B.can C.must D.are able to

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()youshould______dotheworkwell.A.beabletoB.canC.mustD.areableto()youshould______dotheworkwell.A.beab

( )you should ______do the work well. A.be able to B.can C.must D.are able to
( )you should ______do the work well. A.be able to B.can C.must D.are able to

( )you should ______do the work well. A.be able to B.can C.must D.are able to
A.should情态动词后只能用动词原型,can,must,本身也是情态动词,只能放在谓语位置,不能用在其他情态动词后,are的原形是be

A.be able to