第二节：完形填空（共20小题；每小题2分，满分40分）
My sister told me an inspiring story about what happened to her yesterday．As she was
16 a small store, she was pushing the shopping cart and trying to put the change into her pocket．She 17 a quarter(25美分硬币)．Carefully she bent over to get it before the next person came over．To her 18 this elderly man who pushed his cart into her came out slowly and he had 19 quarter in his hand．
