Answer:
The mother is telling her son to persevere and keep going, like she did. "So, boy, don't you turn back." shows how she encourages him to move forward, and "For I'se still goin', honey, I'se still climbin" shows how she wants him to follow in her footsteps, because she is persevering.
Fun Fact:
My class also did this at online school last week.
The answer is Henry was making excuses for not rejoining the fight
The analogy is meant to show parallels between two sets of words. Fertile is to arable as vague is to clouded. If you understand either pair it can be used to decipher the meaning of the other pair you don't know.