新概念英语第二册Lesson 48 测试一 短文填词Dentists always ask questions when it is_ for you to answer. My dentist had just_ one of my teeth and had told me to_ for a while. I tried to say something, but my mouth_cotton wool. He knew I_ match boxes and asked me _ my collection was growing. He then asked me how my brother was and whether I liked my new job in London. _