情态动词口诀(大全)一、选择题1.If you buy your mum an iRobot floor cleaner, she ________ sweep the floor every day
A.can’tB.mustn’tC.needn’tD.shouldn’t2.Don’t cross the road until the traffic lights turn green
A car_______hit you
A.needB.mayC.shouldD.must3.—Will my car be ready by the end of the day
—It ________ be, sir
I’ll call if there’s any problem
A.mustB.couldC.shallD.should4.— ________ you give me a hand
I can’t put up the poster by myself
—No problem
A.CouldB.ShouldC.NeedD.Must5.Exercise is helpful but it ________ be regular (规律的) exercise
A.mustB.mayC.canD.need6.You'd better __________ hard from now on, __________ you will fail the exam
A.work; andB.working; orC.working; andD.work; or7.When you visit a museum, some instructions should ________ and we’d better not ________ them
A.pay att