21.On returning from work, . A.John found a letter in the mailbox B.a letter was found in the mailbox. C.a letter was in the mailbox D.the mailbox had a letter in it 查看更多

 

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On returning from work, _____.

A.John found a letter in the mailbox                B.a letter was found in the mailbox.

C.a letter was in the mailbox                   D.the mailbox had a letter in it

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On returning from work, _____.  

         A.John found a letter in the mailbox  B.a letter was found in the mailbox  

         C.a letter was in the mailbox     D.the mailbox had a letter in it

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