一I often see the sign in schools.What does it mean?
一Students bring mobile phones to school.( )
A.needn'tB.can'tC.couldn'tD.wouldn't
一You added sugar in my tea?It terrible!
一Sorry,madam.I'll pour you another cup right away.
A.feelsB.looksC.soundsD.tastes
一Why do you choose to use Beidou Navigation (导航) Satellite System,Mr.Li?
一Because I think it has many advantages GPS (全球卫星定位系统).( )
A.onB.inC.overD.of
—Sandy,is Mr Li in the teachers' office now?
—I am not sure.He ______ be there.
A.mustB.can'tC.mustn'tD.may
Bill is running so fast!I _________believe my eyes.( )
A.needn'tB.shouldn'tC.mustn'tD.can't
The policeman told the children ______ in the river.It's too dangerous!
A.to not swimB.not to swim
C.not swimD.not swimming
Listen up,guys!Everyone wear a mask.Go and buy one if you don't have one.
A.can'tB.canC.mustn'tD.must
During our holidays,we should avoid _________up at night and oversleeping in the morning.
A.stayB.to stayC.stayedD.staying
_________myself,I will take up a hobby like painting this summer.( )
A.ImproveB.ImprovingC.To improveD.Improved
According to the new traffic rules,people ___________ wear a helmet when riding an e﹣bike.
A.mightB.mayC.canD.must
Five﹣star hotels can ________ first﹣rate service,making passengers feel at home.( )
A.provideB.preventC.protectD.prepare
—Must I return this book before Friday,Sir?
—No,you ________,dear.You can keep it for two weeks.( )
A.can'tB.shouldn'tC.mustn'tD.needn't
The community worker is patient enough ________to the old how to use Health Code(码).( )
A.explainB.explainsC.to explainD.explaining
I know how busy you are and naturally I wouldn't take ________ too much of your time.
A.offB.upC.onD.down
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