Choose the best answer 16. The powers of the three branches of the US government are described carefully in the ..... a. Convention b. Law c. Act d. Constitution 17. Every country in the world is now ... the consequencies of climate change a. dealing b. faces c. facing d. deals 18. Studies show that smoking cigarettes is ... a. wealthy b. healthy c. unhealthy d. unwealthy 19. He's thinking of taking early .... a. retire b. retiring c. retired d. retirement 20. According to American law, the ..... has to prove that an accused person is .... a. court/guilty b.judge/unguilty c. lawyer / innocent d. court/ innocent