Ms. Guli is from Australia. In 2012, she decided to focus on     1     (help) the world face its water problems. Ms. Guli said that when she saw a river that had dropped by 20 feet within six     2     (year), she realized she needed to do something.

She started a group called “Thirst” that had taught over 500,000 people in China different ways     3     (save) water. Ms. Guli also began running. Running was not easy for her. When she was younger, her back was badly hurt. Doctors thought she might never run again. She started swimming, then biking, and     4     (final) running again.

In November, Ms. Guli ran the New York Marathon, the first of the 100 marathons planned for     5     (she) Running Dry project. But after 60 marathons, doctors discovered that Ms. Guli had broken     6     bone in her leg. She decided to walk the marathons rather than run them. That meant spending about 9 to 12 hours     7     (walk) instead of five hours running.

But after 62 marathons, doctors told her that she would damage her leg     8     she didn’t stop. Ms. Guli finally agreed to stop running.

One thing is certain. Even if she     9     (hurt) her leg, Ms. Guli will continue working to let us know how     10     (importance) it is to change the ways we use and save water.

One day a farmer went out for a walk     1    his little son. The farmer wore a pair of wrong shoes. One had thick shoe (厚鞋底)    2    the other didn’t. He    3     （begin) to walk and then his    4    (foot) hurt. When he was just out of the house, he turned to his son and said, “Why is one of my legs    5    long) than the other today?”

The son looked at his father’s legs     6    (careful) as he was walking and then laughed, “Oh, no, Daddy. Your legs are all right. You are wearing the wrong shoes.” The farmer was very happy to hear that and said to himself, “    7     a clever son!” Then he asked     8     (he) son to go back and got the other pair of shoes for him. The farmer had only two pairs of shoes.

When the son ran back to the house, he     9     (find) that the other pair was also a wrong pair. He had to return to his father with nothing in his hands and said, “It’s no use     10     (change) them, Daddy! The shoes at home are not a pair, either!”