将下列句子按故事发展进行排序：_______
A. Red is doing his magic. The ladder is going up.

B. They put the balloon on the ladder. But the balloon can't help.

C. Pam's cat is in the tree.

D. Terry starts climbing the tree at first.

E. The ladder comes down to the ground. Pam gets her cat.

F. Pam makes a ladder to climb the tree. But she can't reach the cat.