问题补充：
One day a farmer’s donkey fell down into a well. The animal cried piteously for hours as the farmer tried to figure out what to do. Finally, he decided that the animal was old, and the well needed 31(cover) up anyway; the donkey just wasn’t worth saving.
He invited all his neighbors to come over and help 32. They all took a shovel (铲) and began to shovel some dirt into the well. At first, the donkey realized 33was happening and cried 34(terrible). Then, to everyone’s amazement, he quieted down. A few shovel loads later, the farmer finally looked down the well. He 35(astonish) at what he saw. With each shovel of dirt 36hit his back, the donkey was doing something 37(amaze). He would shake it off and take a step up.
38the farmer’s neighbors continued to shovel dirt on top of the animal, he would shake it off and take one more step up. Pretty soon, everyone was amazed as the donkey stepped up over 39edge of the well and happily ran off!
Each of our troubles is a steppingstone. We can get out of the deepest wells just 40not giving up! Shake it off and take a step up. .covering/to be covered
答案：
(答案→).covering/to be covered
解析： 略
