1. We are waiting for the group to decide rather than making individual(个人的) decisions.
2. He is the chief(最重要的) test pilot.
3. Judging from his puzzled (迷惑的) expressions, we can tell that this question must be puzzling (迷惑的).
4. He might easily have been seen by someone who lived nearby(附近).
5. Not all people can make this achievement(成就).