This idiom means "to owe money"
to be in the red
Once in a blue ______ : something you do or that happens very rarely.
moon
White ______ : Telling a small lie
lie
______ with envy ; To be very envious.
green
Caught _______ : to discover someone while they are doing something bad or illegal
red-handed
This idiom means "lots of documents, unnecessary bureaucracy"
red tape
This idiom means "to reveal your real character"
to show your true colors
The _____ is always greener on the other side : Other people often seem to be in a better situation than you, but in reality their situation may not be as good as it seems
grass
This idiom means to criticize someone while having that same fault yourself
pot calling the kettle black
This idiom means "to feel sad, to be morose"
to feel blue
______ market : Place you sell illegal products.
black