1. dingy
2. jumpy
He was so jumpy to walk in the dingy building that even a suddenly coming-out cat made him cry out.
3. leer
4. skulk
He skulked in the street where there were some girls leering at the passer-by.
summary:
Harry found the alley is repellent and wanted to run away as soon as possible, but he didn't know how to do. At that time, He came across Hagrid who was looking for something to solve the problem of school. This saved Harry from that horrible place.