This document contains an English grammar practice worksheet with multiple sections:
1. Completing sentences with relative pronouns.
2. Joining sentences with relative pronouns.
3. Circling relative pronouns that can be omitted.
4. Identifying defining and non-defining relative clauses.
5. Joining sentences with relative pronouns using commas.
6. Rewriting informal sentences formally.
7. Translating sentences into another language.
The document provides exercises to practice using relative pronouns in sentences.