... (35) , scientists found out about germs, and then everything changed The (36) of many diseases was found, and cures were developed As this medical discovery spread, the world became (37) _ ... mark the letter A, B, C, or D to indicate the correct word for each of the blanks Health is something we tend to (31) _ when we have it When our body is doing well, we are hardly (32) of it ... survive B To survive C When surviving D Surviving 30 In order to avoid boredom, the most important thing is to keep oneself A occupation B occupational C occupied D preoccupied IV Read the following...