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17. Eating more fruit will help us study _____________(GOOD) and feel healthier.

18. Mike couldn’t sleep last night. Today he was really tired, so he fell ____________(SLEEP) in math class.         

19. Tom wants to get good grades so he makes an _______________(EFFECTIVELY) study plan.

20. Louisa never does any exercise. She’s _______________(FIT) and feels tired all the time.