Answer
Set c has /z/'-s' ending sounds. I think.
Answer:
Although amount and number both refer to quantity, and although plenty of people use them interchangeably, there is a difference.
Since Kenny had to catch Rufus up. Rufus thought that Kenny was his friend. Rufus didn't come to Kenny's house because Kenny laughed at the mean comment Larry Dunn said.
The lines which are a flashback here are: She thought of her last day in middle school, seven years ago, when Sarah had given her an iPod. She had felt ecstatic that day when she realized she would be able to listen to her favorite songs and fend off comments from her cousins about how little she knew about music.