The idea that having a good cry do you (83) _____ is a very old one and now it has scientific validity since recent research into tears has shown that they (84) _____ a natural painkiller cal
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The idea that having a good cry do you (83) _____ is a very old one and now it has scientific validity since recent research into tears has shown that they (84) _____ a natural painkiller called enkaphalin.