Houses on hills have what kind of roofs ?

What is used to make beams,planks, doors and windows ?

Who paints the house ?

Who makes the plan of the house ?

Who joins the bricks and mortar ?

Slate is used as a______ material.

Which of the following  is used to make a tent ?

Who makes houses with ice blocks ?

Houses should have proper ___________ system.

What kind of  house can be built with natural materials available locally ?