About two hundred years ago, the first big balloon was made. The man who made the balloon wanted some animals to try it out. He put a sheep, a rooster, and a duck in the balloon and sent the balloon into the air. Soon it came down. The balloon ride had not hurt the animals. Soon afterwards a man went up in a balloon. Then larger balloons were made. They stayed in the air for a longer time. All this happened a long time before we had airplanes. Three animals were put ....
1 in the balloon
2 in an airplane
3 in some wate
4 in a cart