2 there is a sink in your bathroom
There isn't a sink in your bathroom
Is there a sink in your bathroom?
3 there are mirrors on the wall
there aren't mirrors on the wall
are there mirrors on the wall?
4 there is a cushion below the window
there isn't a cushion below the window
is there a cushion below the window?
5 there are curtains on the wall
there aren't curtains on the wall
are there curtains on the wall