【should,must,would,could,might这几个词怎么区分呀?Theboyslookedcheerful.Ithinkthey__thematch.A.shouldwinB.shouldhavewonC.musthavewonD.mustwinYou__haveseenJaneinherofficelastFriday:she'sbeenoutoftownfortwoweeks.A.c】

　　should,must,would,could,might这几个词怎么区分呀?

　　Theboyslookedcheerful.Ithinkthey__thematch.

　　A.shouldwinB.shouldhavewonC.musthavewonD.mustwin

　　You__haveseenJaneinherofficelastFriday:she'sbeenoutoftownfortwoweeks.

　　A.couldn'tB.Mustn'tC.wouldn'tD.shouldn't

　　Hesaidhe__thedifferencebetweenrightandwrong.

　　A.can'ttellB.shan'ttellC.couldn'ttellD.won'ttell

　　像这样的词总是做错,