It's pointless to put yourself "in rows of onions" to succeed the DELF!!!
To have your back against the wall ("Êter au pied du mur", literally "To be at the foot of the wall")
Bonjour de France brings you a new idiomatic expression illustrated by Jean-Luc Desset, artist from Nice.
French exercises b2 Advanced
Lesson "Être au pied du mur"
Exercises on the same theme
"Don't look for the little beast", yes, there are exercises after this idiom explanation!