Buck saved Thornton The three men were taking a boat down a fast and rocky river. Thornton was 1 the boat， while Hans and Pete moved along the river bank， holding the boat with a rope. Buck followed them， keeping a worried eye on Thornton. They came to a more 2 part of the river， and the boat started to go too quickly. Hans pulled on the rope to stop it， and pulled too hard. The boat turned over， and Thornton 3 into the water and carried down river towards rocks where no swimmer could live. Buck jumped into the river immediately and swam three hundred meters 4 he reached Thornton. Then he turned， and let Thornton 5 his tail. Buck swam towards the river bank. But they moved 6 . It was hard for them to move. Thornton knew that they would not get to the bank quickly enough， so he let go of Buck， held on to a rock in the middle of the water， and shouted， “Go， Buck， go!”
