Past progressive is the correct answer.
Answer:
Explanation:
A good teacher always works hard at being a good student. The admiration shown for a student's skill is genuine if it is genuine. Make sure that education is a two way street.
A good student always has respect for the subject matter he is studying even if he is not particularly good at it. He/she knows that maybe he or she can't do it, but that does not mean it is useless, or to be despised. Respect everything you are exposed to; sometimes the person who proposed the idea took a lifetime to be able to write the conclusions to what he found.
It is a metaphor for resource distribution proposed by the ecologist Garrett Hardin in 1974.
