a. If you are sick, doctors can give you some medicine as a ____ for the ____. b. Sometimes, a doctor will have to do an ____ on a ____. c. In an operation, doctors have to use many ____ and follow the right ____. d. Before an operation, doctors should ____ water until it ____ and use this to clean their instruments. e. It’s best to ____ getting sick in the first place, but sometimes it’s impossible to ____ an illness. f. ____ are doing ____ to find more cures for diseases.

Louis Pasteur

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