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Iwanttoknowhowlong                         A.hashebeenb...

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問題詳情:

Iwanttoknowhowlong                         A.hashebeenb...

I want to know how long                   

       A.has he been back     B.has he come back    C.he has been back     D.he has come back

【回答】

C           

知識點:狀語從句

題型:選擇題