He thinks that's where its most "corrupt". This book is amazing!
I would say that the word "glowering" in the sentence shows the best example of tone being used. The author didn't directly say that the older brother was angry, but set the mood or tone of that idea in the minds of the auidence by saying that he was "glowering". Hope this helped!
Answer:
Dear mom and dad,
How are you? I am writing to inform you that I had an unfortunate accident during my holiday.
I was due to return home in four days. Due to my misfortune, I had an accident that will prevent me from travelling for at least a week.
I hope that you understand that I cannot get back home as soon as planned.
Best regards,
Jack