Once upon a time， a group of men came to a rainforest． They would（1） （参加） a race there． One night， when they sat down for food， （2） dog appeared． Slowly， it came （3） （靠近，接近） them． It looked hungry， so they gave it some meat． As a r（4） ， the dog followed them everywhere．
The men（5） （加快速度） many times to prevent the dog（6） following them． But each time it（7） （赶上） them． They went（8） with their race， which included hiking， c（9） a mountain， and running． It lasted for several days．
One day， they went boating to a destination（目的地）． They thought the dog might（10） （放弃）．Surprisingly， the dog jumped into the river and swam towards their boat．They were so m（11） by the dog that tears came to their eyes and they let the dog into the boat．
When the race was over， they were all t（12） ， and wanted to have a rest． Just then， they found the dog was covered with wounds． （13） save the dog， they decided to take it to the hospital． After it r（14） the treatment， it got better soon．
Now the men regard it as one of their family（15） /ˈmɛmbəz/．