1. The poem tells of a kid on his/her first day of school. He/Her is describing in the poem that the first is the worst(which is not in my opinion).
2.Line 2 and Line 8 or Line 5.
3. The upper case word WAIT-- thing and FRIEND in the last section.
WAIT and FRIEND are being empathized.<span />
I believe that this question is under the wrong subject.
A nonrestrictive modifying clause (or nonessential clause) is an adjective clause that adds extra or nonessential information to a sentence. The meaning of the sentence would not change if the clause were to be omitted. Nonrestrictive modifying clauses are usually set off by commas.