* Write a passage about solar, using the given words 1. The sun/ be/ effective source of power. It is cheap/ clean. It/ not/ cause pollution. 2. Solar panels/ be installed / the roof of the house/ receive / energy / the sun. 3. It/can/be/store/ a number/ days and it can be used / cloudy days. 4. We can/ save natural resources by/ use/ solar energy instead / gas/oil/ coal. 5. Therefore, a lot of countries/ the world/ already/ use/ solar energy.
