The creation of the satellite dish in the past 20 years , has altered the average intelligence of the human being for the better and sometimes worse .
The creation of the satellite dish in the past 20 years has altered the average intelligence of human beings for the better and sometimes for the worse .
The creation of the satellite dish in the past 20 years has altered the average intelligence of human beings for the better and sometimes for the worse .
この文の文法を修正してください: The creation of the satellite dish in the past 20 years , has altered the average intelligence of the human being for the better and sometimes worse . 出力: