用was,were,wasn't,weren't来回答.The floor w__________ not clean.

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用was,were,wasn''t,weren''t来回答.Thefloorw__________notclean.用was,were,wasn''t,weren''t来回答.Thefloorw_______

用was,were,wasn't,weren't来回答.The floor w__________ not clean.
用was,were,wasn't,weren't来回答.
The floor w__________ not clean.

用was,were,wasn't,weren't来回答.The floor w__________ not clean.
The floor 这里应该是一个整体选单数was吧

was

was.