Did you know what ___?---Sorry,Ididn'tA happen B happened C happening D did happen并说明一下理由哦

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Didyouknowwhat___?---Sorry,Ididn''tAhappenBhappenedChappeningDdidhappen并说明一下理由哦Didyouknowwhat___?---S

Did you know what ___?---Sorry,Ididn'tA happen B happened C happening D did happen并说明一下理由哦
Did you know what ___?
---Sorry,Ididn't
A happen B happened C happening D did happen
并说明一下理由哦

Did you know what ___?---Sorry,Ididn'tA happen B happened C happening D did happen并说明一下理由哦
选B
what ___作为know的宾语,应为陈述语气,排除D
宾语what ___是一个从句,what为主语,谓语应选动词,排除C
did时态是过去式

答案选B
因为看到did说明是过去式,之后what____是know的宾语从句,宾语从句要用陈述句语序,也就是what+谓语+其他(或不加其他)。happen的过去式是happened.其他的都是时态错误或语法错误。