丁寧語 => polite form N4
一口に…といっても => Although in general... N2
Evaluate
一緒に => together N5
~はめになる(~羽目になる)     => to get stuck with (some job); to end up with (something unpleasant) N1
一度に => all at once N3
~にもならない => ~It's not worth it N1
Evaluate
~もなにもない => nothing; (not) ~ at all; there's no need to ~ N1
Emphasize the negative meaning
~もなにも(~も何も)      => ~ and everything N1
Description
一通り => Basically, (get) over, done N2
Base, base
気にもならない => it's no use; can't do N1
Evaluate
一気に => in one go; without stopping; all at once; immediately; instantly; right away ~ N2
一方だ => more and more; continue to ~ N2