I love animals a lot. When I first came to the United States. I1together with a local family that had a lovely dog named Charlie. One week the whole family was away for a trip, so they asked me to give Charlie a2every day. I was so fond of Charlie that I said yes without3. The first day they left, I went to the park nearby to walk Charlie. I kept him on the leash (牵狗绳) and4towards the park. As soon as we arrived at the park, Charlie stopped to do a poop (大便). I waited5until Charlie was done. Then I kept walking. Ten seconds later, I heard a (n)6coming from behind. Turning around, I saw an old lady walking her own dog7. She gave me a bag when she came close to me. Seeing my8look, she explained that the bag was for the dog poop. She told me that once there's rain, the dog poop left on the ground would go everywhere, sending out a strong smell and polluting the environment in the park. Feeling a sense of9, I walked back and put the dog poop in the bag. From that day on, whenever I walked Charlie, I would take some10just in case he would do a poop.