I my face when suddenly someone at the door. A. washed, knocked B. washed, was knocking C. was washing, was knocking D. was washing, knocked 查看更多

 

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I ________ my face when suddenly someone ________ at the door.

[  ]

A.washed; knocked
B.washed; was knocking
C.was washing; was knocking
D.was washing; knocked

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