题目内容：

Six days of spring rain had created a wild river _1.___(run) by Nancy Brown’s farm．As she tried to drive her cows to higher ground, she __2.____(slip) and hit her head on a fallen tree trunk．Nancy was badly hurt and could only walk with great _3.___(difficult）．The water __4.___(rise)．Nancy’s pace got slower and slower．Finally, all she could do was to throw her arm around Lizzie’s neck and try to hang on．About 20 minutes later, Lizzie managed to _5.___ (succeed) pull herself and Nancy out of the water and onto a bit of high land．

It took rescuers another two hours to discover Nancy．_6.___ helicopter lowered a doctor, __7.____attached Nancy to a life-support lift．They raised her into the helicopter and took her to the school gym, _8.____the Red Cross had set up an emergency shelter．

When the flood subsided two days later, Nancy immediately went back to the highland．Lizzie was gone.  __9.____was one of the 19 cows that Nancy lost．“I owe my life 10.____her,” said Nancy sobbingly．