Did you konw ( )? A.how long she has been to Shanghai B.if she will come next year or notC.why they didn't leave here yesterday D.whom she is looking for just now

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Did you konw ( )? A.how long she has been to Shanghai B.if she will come next year or notC.why they didn't leave here yesterday       D.whom she is looking for just now
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Did you konw ( )? A.how long she has been to Shanghai B.if she will come next year or notC.why they didn't leave here yesterday D.whom she is looking for just now
Did you konw ( )? A.how long she has been to Shanghai B.if she will come next year or not
C.why they didn't leave here yesterday D.whom she is looking for just now

Did you konw ( )? A.how long she has been to Shanghai B.if she will come next year or notC.why they didn't leave here yesterday D.whom she is looking for just now
C
did you know +宾语从句,主句是过去时,宾语从句一般也用过去时
不明白的再问哟,请及时采纳,多谢!

C

C

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C.why they didn't leave here yesterday
其余选项中前后时态相矛盾.