~んだから (it's because, as you know)

You really are a picky eater, aren't you.

"Takaaa-chan, I can't see you~~" "You can't see because you're blindfolded."

No way. You're tall, so you've gotta play at the front.

Since I'm the one covering for Tanaka's mistakes, it's only natural that I receive compensation proportional to the labor.

It's a living creature, so of course it's going to poop.

Since you were starting from scratch, you should've gone for a bold image change.