This document contains 30 sentences with errors in grammar, spelling, punctuation or word choice. The sentences would need to be corrected by editing the mistakes in order to be grammatically correct and clear in meaning. Some examples of common errors include incorrect verb forms, subject-verb agreement issues, punctuation errors, words that sound similar but have different meanings, and issues with articles or other small grammatical words. Most of the sentences can be corrected with minor edits like replacing a word, adding or removing punctuation, or changing a verb form or other part of speech.