disorder, therapy, nerve, bacterium , intestine , skull, skeleton ,spine , immune system 1.The role of the ? is to protect our body against various diseases. 2. Have you tried any ? for your sleeplessness? 3. Her disease was caused by a strange ? type. 4. She has experienced a sleeping ? since her husband's death. 5. Food passes from the stomach to the small ? and from there to the large one. 6. The ? is the structure of bones which supports your body.

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