Keys Exercise 1 1-5ADABC 6-10ABDCD 11-15DBBDC 16-20CCABA 21-25ADADA Exercise 2 1-8DGBCAEJH Exercise 3 1.symptoms 2.compulsive 3.drug-use 4.nicotine 5.bipolar 6.psychiatric 7.adulthood 8.extraordinarily 9.diagnostic 10milderKeys Exercise 1 1-5 A D A B C 6-10 A B D C D 11-15 D B B D C 16-20 C C A B A 21-25 A D A D A Exercise 2 1-8 D G B C A E J H Exercise 3 1. symptoms 2.compulsive 3.drug-use 4.nicotine 5.bipolar 6. psychiatric 7.adulthood 8.extraordinarily 9.diagnostic 10milder