二、完形填空(每小題1分，滿分20分)

　　My children and I were finishing the last minute preparations for Kathy’s birthday celebration. At one store we had bought a 21 balloon with Kathy’s favorite character design on it. We had to make one more stop at another store to complete our 22 . I sent my older daughter and her little brother out to our 23 while my other daughter and I were 24 at the cashier line.

　　A very short time later, my older daughter with little brother came running back into the store; upset that Kathy’s birthday balloon had 25 while they trying to get into the car. I was tired from 26 , but I sent them back to the vehicle 27 them not to worry because we would get Kathy another 28 . I paid for our purchases all the while trying to think of the most expedient place to 29 another balloon.

　　As Kathy and I 30 our car a lady with 31 face came up to us. She 32 some folded bills in my hand. She 33 to me that she had seen what had happened and did not 34 my older daughter or my younger daughter to be 35 at the loss of the balloon.

　　I thanked her for kindness and 36 to give her the money back; as it was not a 37 to get another balloon. But she said, “I 38 children and I like to see them be happy.” I was overwhelmed by the 39 of a total stranger that my daughters and I hugged the lady 40 her for kindness. She left so quickly that I was unable to even ask her name. Finally, I looked in my hand what I found was not just a single one dollar bill but four one dollar bills.