ne vous y trompez
You could say It was hard to deceive the teacher about that lie.
"sois toi-même"
Protégez-vous
if you want to you can- SURE you can XD
Amour vous-même
I'd probably say : "Courage !".
vous sont vous amusant?
vous acheter un cadeau
amuse-toi mon ami/amie
ramène-toi à la maison
It depends to who you say it.If you say it to yourself or to a person it's "Fais le"If you say it to a group of person it's "Faites le"
You could say It was hard to deceive the teacher about that lie.