This document provides a study guide for a test on space travel. It includes:
- Guidelines for writing large numbers with commas and hyphens.
- Practice with modifying sentences from affirmative to negative and interrogative forms.
- Vocabulary words to define like "advert", "antique", and "crew members".
- Examples of grammar structures for making predictions and future plans using modal verbs like "will", "won't", and "might".
- Explanations of punctuation marks and using the present continuous tense to discuss arrangements.
- Links to online resources for practicing these concepts.