I didn’t manage to do it______you had explained how.

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问题 I didn’t manage to do it______you had explained how.

选项 A、until
B、unless
C、when
D、before

答案A

解析

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专业英语四级

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I didn’t manage to do it______you had explained how.

专业英语四级

"WhydidJanetwanttobeanurse?

In1998consumerscouldpurchasevirtuallyanythingovertheInternet.Books,compactdiscs,andevenstockswereavailablefrom

Thisisanidealsiteforauniversity______itisfarfromthedowntownarea.

Creatingsomuchconfusion,Masonrealizedhehadbettermake______whathewastryingtotolltheaudience.

I’llneverforget______youforthefirsttime.

Thoughjanewasoffendedbyhersister’sruderemarks,sheonly______herlipsandsaidnothing.

Hehas______averyoddsetofpeople.Ihopetheywon’thaveabadinfluenceonhim.

Hisstrongsenseofhumourwas________makeeveryoneintheroomburstoutlaughing.

Thelessthesurfaceofthegroundyieldstotheweightofafully-loadedtruck,tothetruck.

TravelersarrivingatHeathrowairportthisyearhavebeenmetbythesmelloffreshly-cutgrass,pumpedfromadiscreetcorner

Morepeoplethaneveraredrinkingcoffeethesedays—butinsmallerquantitiesthantheyusedto.Somemanufacturersofcoffeem

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患者女性，58岁，颈部出现一生长快速的肿块，质地坚硬，呈圆形，表面不粘连，可活动，应诊断为

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