what's this?It's window.改复数句
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what''sthis?It''swindow.改复数句what''sthis?It''swindow.改复数句what''sthis?It''swindow.改复数句whatarethey?theyarewin
what's this?It's window.改复数句
what's this?It's window.改复数句
what's this?It's window.改复数句
what are they?they are windows
What are they? They are windows.
What are they?They are windows
what are those?they are windows