Viruses reproduce rapidly slowly moderately( rapidly, slowly, moderately ) inside the body. They go into your cells and use the cell's stuff parts organelles( stuff, parts, organelles ) to replicate duplicate copy( replicate, duplicate, copy ) themselves. Eventually, the cell will explode burst bleed( explode, burst, bleed ), releasing the new viruses into your body, the cell bursting is what makes you feel sad depressed ill( sad, depressed, ill ).