Air pollution is the presence in or introduction into the air of a substance which has harmful or poisonous effects.
Ill health is : a condition of inferior health in which some disease or impairment of function is present but is usually not as serious in terms of curtailing activity as an illness elderly parents who are in ill–health and need their financial and personal help
Firstly, the author is going to attend exciting elective courses. Secondly, they're going to join several clubs to meet new friends. Lastly, they will have an unforgettable experience by attending football games, and dances. In conclusion, That's three of the ways he supports the main idea.
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Answer: B,Harry is remorseful but believes Cedric's death should be left in the past.
Explanation: I think it B because in quotes Harry say " Amos,playing with Time?You know we can't do that." as Amos begged him to bring his son to life once more.