用适当形式和when、while填空
用适当形式和when、while填空
They____(eat)dinner_____someone_____(knock)at the door just now
I___(meet)an old friend____I____(walk)in the street one hour ago
The TV____(catch)fire___they_____(work)yesterday
They____(eat)dinner_____someone_____(knock)at the door just now
I___(meet)an old friend____I____(walk)in the street one hour ago
The TV____(catch)fire___they_____(work)yesterday
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They were eating dinner when someone knocked at the door just now.
I met an old friend while I was walking in the street one hour ago.
The TV caught fire while they were working yesterday.
I met an old friend while I was walking in the street one hour ago.
The TV caught fire while they were working yesterday.
1年前
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