题目内容：

The dog, later1.(name) Arthur, came up to a Swedish team while the members were sharing a meal in front of a 20_mile race stage through the rough area in Ecuador. One of the2.(athlete), Mikael Lindnord, took pity on the dog wandering near their table and fed3.meatball to it. And that meatball made them friends for life, as far as Arthur was concerned.

The extreme sport of adventure racing includes biking, hiking, and boating that challenge even the4.(strong) humans. Imagine a dirty stray（迷失的）dog trying 5.(keep ) up. But Arthur6.(do) keep up. The dog followed the team as they got up to leave.7.(actual), he never stopped following them---swimming alongside the boat of the team, and taking on muddy(泥泞的)slopes when the team hiked.

Arthur stayed alongside the team for the rest of the8.(compete),but not without cost to his well—being. The dog needed doctor’s attention after the six-day race was finished9.the team helped Arthur as much as they could during the event. Arthur’s hard work paid off: Lindnord decided to adopt(收养) the dog 10.brought him back to Sweden.