If you see a mistake, then please correct it.
If you say "I was tricked," well that's certainly so but there's no mistaking that you were the one who signed up on a "sweet deal".
It is a difficult task, choosing what is "right" or "wrong", but you have to do it.
Clearly you are mistaken.
Strange to say, none of us noticed the mistake.
If you should find any mistakes, please let me know at once.
If you pig out every day, you're sure to gain too much weight.
I made a big mistake in choosing my wife.
I made an awful mistake in the test.
You make mistakes if you do things in a hurry.
A careless man often makes mistakes.
Confused by her careless mistake, she burst into tears.
She keeps on making the same mistakes.
She tried to hide her mistake from us.
She accused me of making a mistake.
She told me a wrong address on purpose.
She acknowledged having made a mistake.
She was unconscious of her mistake.
She made the same mistake as before.
She made many mistakes in typing the report.