Indicate which of the following items do not constitute complete sentences. In each faulty case, briefly explain the problem and offer adequately revised version.
1. Norbert has decided to become a guru.
2. Giving advice even when it is not requested.
3. Having completed years of strenuous self-discipline, and without encouragement from anyone.
4. Take note of Norbert's progress.
5. A noble achievement, to have earned the title "Norbert the Purified One of Daly City."