Answer:
1. Clause (dependent)
2. Phrase
3. Independent
Step-by-step explanation:
1. It has a subject and a verb. Phrases can only have one or the other.
2. It has only a subject (paper) and preposition (on). It is a phrase, a small group of words that can help connect things, but isn't always completely necessary.
3. "We packed up and left" can stand alone as it's own sentence, so it is independent.