But sad, angry expressions decreased the flow of oxygen- carrying blood, and created a vicious (4) _______ of gloom and depression by effectively (5) _______ the brain of essential fuel.
But sad, angry expressions decreased the flow of oxygen- carrying blood, and created a vicious (4) _______ of gloom and depression by effectively (5) _______ the brain of essential fuel.
C. circle
D. vortex