根据句意及首字母提示补全单词 1. My brother runs very fast. He wants to be an a__________ when he grows up. 2. Their fathers had to work on building sites to make a l__________. 3. After hard work, the boy finally got a good c__________to go to Peking University. 4. After some discussions, most people are for his idea, and still some of them are a__________ it. 5. You've got nothing to c__________ about. We all do the same here.