作业帮用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.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.