At first men did not know how to make fire. Sometimes a forest was hit 1 lightening. Then a fire was 2 . The people took some of this fire to start a fire near 3 homes. A fire was very important for three reasons. It kept them 4 . Wild animals were frightened by it. They did not attack when they saw a fire. The other thing was discovered: When food is cooked, it tastes much better! But men still did not know 5 to make fire. When they had a fire, they did not 6 it stop burning. If it went out, they could not start 7 again. They had to wait 8 lightening to start another fire. Later, they discovered how to make fire. If you rub two pieces of wood together, they become hot and burn. You have to rub very fast! One way of doing it is to make a little hole in a piece of wood. Little pieces ends of a stick is put 9 a hole. The stick is rubbed 10 the hands. The end of the stick becomes very hot. The small pieces of wood and dry leaves begin to burn. This is one of the ways of making fire.