Without the use of ______________________, it would be harder to communicate with family that live far away.
All day long we dug and dug and dug. Finally, we found the _______________________ we had been looking for.
Than guy was such a jerk, He acted like a _____________________ all day long.
Hunter-gatherers walk and ___________________ for materials and food all day long.
I have been told by my teacher that the word paleolithic means _________________________.