Practicing function: mainly applicable to critical reasoning q's

GRE Verbal Problem Solving
1

Hey guys, if I want to practice function is it best to do it on pieces of text where critical reasoning questions are asked?

2

you wanna practice CR questions ?

3

no, i want to practice identifying functions of sentences and was wondering if you know if critical reasoning sentences are the best ones to practice that with.

4

I guess you can watch any of the series that is dedicated to functions