A、  B、  C、  D、  C

admin2015-01-11  0

问题
(A)Some customers are entering the store.
(B)The store clerk is cleaning the store with a broom.
(C)Some goods have been hung on a rack outside of the store.
(D)The floor of the store is being mopped.

选项 A、 
B、 
C、 
D、 

答案C

解析
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