Oh wow you have this on English?
You can do it
If I am understanding the question correctly, the constant or control is what stays consistent throughout the experiment.
Answer:
Why can't I be enough
I try my best yet its not enough
I do what you want and its not enough
I tell you how I feel and its not enough.
I am who I am and its not enough.
I tell the truth and its not enough.
But when I make 1 mistake I'm labelled as a failure.
Thought of this on the spot hope you like it.
Use context clues to determine the meaning of the unknown idiom