完形填空
Sarah lived on a farm with her family. She was 1 to learn to track, to identify each person and where they were going by the marks they left on the ground. And if her father couldn't teach her, she'd teach herself.
To the2of her family, she borrowed all their 3 and taught herself to recognize everyone's footprints in the sand. More than once her father came outside shouting, “Sarah, bring me 4 my boots. ”
Sarah developed the habit of walking around with her eyes fixed on the ground, 5 the comings and goings of every 6in the place.
She also developed the annoying habit of 7 everyone. What were you doing down at the dam, Jack? You're not 8to play there. ” “Did you find what you were 9 in the garage, Auntie?” and “Who was the stranger visiting today wearing size ten boots, Mum?”
After she'd 10 every pair of shoes that everyone 11, she turned to the farm's animals. By this time 12 her victims had to admit, 13, that she was good.
Her best 14came one evening when she said the horse's front foot was 15. Her father said that the horse was 16 fine. Sarah 17 that its hoof (蹄）had a split. Sarah's father 18 the horse's hoof.
“You're 19. The hoof is split. How did you know?”
“You can see it in its 20. " Sarah moved the horse away. “Look, it's plain in the sand. "
“If you can tell it has a split hoof from that sand, you're pretty good,” said her father.
