By standing by his side and pushing him on.
I believe the answers to the sections of question 2 are:
A. "We" is who needs the umbrellas.
B. "Them" is the pronoun that replaces "umbrellas".
Mechanics refers to the rules of the written language, such as capitalization, punctuation and spelling. An understanding of both grammar and mechanics is required to clearly communicate your ideas in a paper.
