阅读下列短文, 从所给的A、B、C和D项中选出最佳选项。Last summer, Sam went to a river to catch fish with his friends near his home. They had great fun walking in cool running water to catch the small silver fish.
Before going to the river, Sam found a bag first. As soon as he reached the river with his friends, they took off their shoes and socks and put their feet into the running water. It was so cool. Walking carefully, Sam looked for the right place where the fish shone. Often Sam fished with his friend and it was easier. But this time Sam fished by himself because he wanted to have a try. Taking two corners(角) of the bag, he stood in the water and slowly put the bag down to the river. Little by little, he put it down to the bottom(河底) . Then he waited, not making any sound, or moving a bit. When the fish went above the bag, Sam moved the bag up quickly and carefully. He got it. The bag was full of little silver fish.
But the greatest fun was not just in catching the fish, but also in letting them go back into the river to go on their natural lives. Sam put down the bag into the river, and the small fish swam off. Other children would also do the same and let the fish go away.