One day John and Bill were fishing. John took his ___(1)___ Black with him on the riverbank. When the dog saw a bird, he would run ___(2)___ it and try to ___(3)___ it. “All the fish are afraid and ___(4)___ away,”said Bill.“Be quiet, Black.”John shouted at the dog, ___(5)___ Black did not listen to him.“Shall we go now, Bill?”asked John,“Next time I shall not bring him here ___(6)___.”

　　“Wait,”said Bill.“A fish is biting my line.”“Be careful, Bill!”shouted John. But it was too ___(7)___. The boy fell into the water.“Help! Help!”Bill shouted. But John couldn't swim, either. ___(8)___ Black came out. He jumped into the water and ___(9)___ the boy onto the bank and ___(10)___ his life.