(1) The time transitions in this paragraph include "Within minutes after waking," "then," "An hour or two later," "Later," and "Finally."
(2) and (3) These sentences should be easy to spot:
- "Ahh! My tongue tingles and my eyes pop open. I then have the energy to eat."
- "That's enough to get me off to school and through my first class."
Note that complete sentences--as well as individual words and phrases--can be used to make smooth transitions in a paragraph.