Rules:
- 1. We generally use the past simple about actions that happened before other actions in the past.
- 2. For the main events and actions in the story, we use the past simple.
- 3. To describe scenes or say what was in progress at a particular time, we use the past continuous.
- 4. We use used to to talk about past habits.
- 5. We use the must/may/might/can't have to make speculations or deductions about what happened.
Answer: The completed rules are as listed above.