Using a comma for a period. The rain ruined our vacation, we couldn't go to the beach. My back hurts, I played racquetball yesterday. Some things to watch Verbs Use active voice not passive voice. Subject-verb agreement .
Single subjects take single verbs.
Plural subjects take plural verbs. The foreign aid appropriation , as well as two bills, was sent to the subcommittee. The hardware store , along with the pharmacy, was demolished. There is a class in McCarty Hall that teaches writing. A class in McCarty Hall teaches writing.