He ______ the 8:20 bus because he didn’t leave home till 8:25.A、couldn’t have ca

游客2023-11-08 22

问题 He ______ the 8:20 bus because he didn’t leave home till 8:25.

选项 A、couldn’t have caught
B、ought to have caught
C、shouldn’t have caught
D、must not have caught

答案 A

解析 because引导的分句用了过去时，因此本句是对过去的推测。而根据他出门的时间。可知他肯定没有赶上车，要用couldn’t表否定推测，答案为A项couldn’t have caught。must表推测时只用于肯定句中，ought to have done表示“本应该”，shoudn’t have done表示“本不应该”。

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He ______ the 8:20 bus because he didn’t leave home till 8:25.A、couldn’t have ca

Tedcouldn’tremembertheexactdateofthestorm,butheknewitwas______Sun

______ofthetwinswasarrested,becauseIsawbothatapartylastnight.A、Non

Thefootballmatchwas______becauseoftheheavyrain.A、calledoffB、calledup

Ithink______westopworryingsomuch,becauseworrywillnotstriptomorrowo

Thelocalslikesellingthingstotouristsbecausethetouristsareso______.A

IfHenry______undertheladdertocatchherwhenshefell,shecouldn’tbesmi

Iexpecttheorangejuice______undrinkablebecauseithasbeenputtherefors

Muchas______,Icouldn’taccompanyhimtotheconcertbecauseIsimplydidn’t

Alltheflights______becauseofthesnowstorm,wehadtotakethetraininstea

Susandoesn’twanttoworkrightawaybecauseshethinksthatifshe______ajo

Halloweenusedtobesomethingquitedifferentfromthecelebrationofsugar

()youreturnthosebookstothelibraryimmediately,youwillhavetopayafin

[originaltext]GenBadrodinHaiti,thenationalpolicechief,saidSunakiman

A.基因扩增 B.染色体易位 C.两者都是 D.两者都不是属于基因表达异常

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