Why did John Mills fly in an aeroplane?

Chọn đáp án C

Dẫn chứng: It was the only way he could visit his grandchildren in Canada. “I had made up my mind that I was going to do it, I couldn‟t let my son, his wife and their three children travel all the way here to visit me. It would be so expensive for them and I know Tom‟s business isn‟t doing so well at the moment – it would also be tiring for the children – it‟s a nine-hour flight!” he says.