This document provides grammar and vocabulary exercises on various topics:
1. It asks the reader to identify the modals in sample sentences based on obligation, no obligation, prohibition, ability and permission, and advice.
2. Sample sentences are given to identify the past simple and present perfect tenses.
3. Choices are given to identify the present simple and present continuous tenses in sample sentences.
4. Technology-related words are given as partial words to complete in sample sentences.
5. True/false statements are given about money and shopping concepts.
6. Choices of prepositions are given to complete sample sentences expressing time.