完形填空 I knew little about English when I first came to America. So I went to a language school every day to 1 English. One day, during the break, I asked one of my classmates a question. When I thanked her for it, she said,' 2 . It's a piece of cake.' I thought to 3 , 'She wants a piece of cake?' So I said to her, 'I haven't taken any piece of 4 with me today. What about a piece of biscuit (饼干)?' She looked at me in surprise and then smiled. She knew that I didn't 5 her. She said, 'What I mean is 'no problem,'' Then I began to learn that 'a piece of cake' is not only a piece of cake, but also means a thing that is very easy. (     )1. A.tell (     )2. A.All right (     )3. A.yourself (     )4. A.bread (     )5. A.understand B.know B.The same to you B.myself B.pizza B.remember C.teach C.You’re welcome C.himself C.biscuit C.find D.learn D.Nothing serious D.herself D.cake D.believe