What is it?
A TV / Television
What is it?
A carpet
What is it?
A sofa
What is it?
A bed
What is it?
A wardrobe / closet
What is it?
A fridge / refrigerator / fridge-freezer
What is it?
A table
What are they?
Chairs (must say 's', are not is)
What is it?
A computer
What is it?
A laptop
What are they?
Stairs (no S = no points)
What is it?
desk
What is it?
door
What is it?
a window
What is it?
a wall
Where is it?
behind
