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I      whensheknockedatthedoor.A.wash     B.amwashing  ...

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問題詳情:

I      whensheknockedatthedoor.A.wash     B.amwashing  ...

I       when she knocked at the door.

A. wash      B. am washing       C. washing     D. was washing

【回答】

D

知識點:動詞時態

題型:選擇題

標籤:Bamwashing