Ⅰ. 根据句意及首字母提示完成单词(10分)
1. His car hit the wall. I think he could a______ the accident if he was careful enough.
2. He didn’t finish his homework on time. I think there was no e______ because he had enough time.
3. We look f______ to hearing from him.
4. The boy is b______ to talk in front of so many teachers.
5. They come from Canada. They are C______.