◆21Passage OneQuestions 21 to 25 are based on the following passage.It was one of the hottest days, of the dry season. We had not seen rain in almost a month and our crops were dying. If we didn't see some rain soon, we would lose everything. It was on this day that I witnessed the only miracle I have seen with my own eyes.I was in the kitchen when I saw my six-year-old son, Billy, walking toward the woods, obviously trying to be as still as possible. Minutes after he disappeared into the woods, he came running out again, toward the house. I thought that whatever he had been doing was completed. Moments later, however, he was once again walking toward the woods.Finally I crept out of the house and followed Billy on his journey, making sure not to be seen. He was cupping both hands in front of him, careful not to spill the water he held in them. Branches and thorns slapped his little face as he went into the woods, but he did not try to avoid them. He approached several dangerous-looking large deer and knelt down beside a tiny fawn(幼鹿), obviously suffering from loss of water. The fawn lifted its head with great effort to drink the water in my boy’s hands.When the water was gone, he jumped up to run back to the house.He went up to a spigot (水龙头) we had shut off the water, to opened it all the way up and a small trickle(细流) began to flow out. He knelt there, letting the water slowly fin up his makeshift “cup.” When he stood up and saw me in front of him, his little eyes filled with tears. “I'm not wasting,” he pleaded. I patted him on the back and joined him with a small pot of water from the kitchen. I stayed away on the edge of the woods as he worked hard to save the fawn in the woods. Tears rolled down my face and hit the ground when they were suddenly joined by other drops, and more drops, and more. I looked up at the sky and found it was raining.
21.Billy tried to be as still as possible in order NOT to________.