4. A boy lights a lamp with a matchstick.
5. My friend drills a nail into the wall.
6. Sheila rubs her hands to produce heat.
7. A boy skateboarded on the street.
8. We can walk on the surface of the Earth and don't float off into space.
9. Rocks roll downhill.
10. The moon revolves around the sun.


pasagot po pls now na huhuhu​