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.