500
The Harris family my neighbors of ten years, recently installed a pool in their backyard, consequently I decided to sneak into the Harris yard last night and swim for an hour but Mr. Harris caught me and threw a lamp at my head.
PUNCTUATION ERRORS?
1. The Harris family, my neighbors...
2. ...backyard. Consequently, I...
3. ..the Harris' yard...
4. ...an hour, but Mr. Harris...