All the tyres of the school bus will get flat tomorrow.

Answer

To classify the statement "All the tyres of the school bus will get flat tomorrow," we will analyze the situation step by step.

### Step-by-Step Solution:

1. **Understanding the Event**:
- We need to determine the likelihood of the event where all tyres of a school bus get flat tomorrow.

**Hint**: Think about how often such an event occurs in real life.

2. **Defining Probability Terms**:
- We have several terms to classify the event: likely, unlikely, possible, impossible, certain, and even change.
- "Likely" means there are good chances of it happening.
- "Unlikely" means it can happen, but the chances are low.
- "Possible" means it can happen, but not necessarily likely.
- "Impossible" means it cannot happen at all.
- "Certain" means it will definitely happen.

**Hint**: Familiarize yourself with these terms to understand their meanings clearly.

3. **Analyzing the Event**:
- The event of all tyres getting flat is not something that happens frequently. It is a rare occurrence.
- Therefore, we can say it is not "certain" because it is not guaranteed to happen.

**Hint**: Consider how often you have seen or heard about all tyres going flat at once.

4. **Ruling Out Options**:
- Since it is not "certain," we can rule that out.
- It is also not "likely" because the chances are very low.
- "Possible" might seem like an option, but it implies a higher chance than what we have here.
- "Impossible" can be ruled out as well, since there is a small chance that it could happen.

**Hint**: Eliminate options based on the likelihood of the event.

5. **Conclusion**:
- The only term that fits is "unlikely." This means that while there is a chance that all tyres could get flat, it is very rare and not expected to happen.

**Hint**: Reflect on the definition of "unlikely" and how it applies to this situation.

### Final Answer:
The event "All the tyres of the school bus will get flat tomorrow" is classified as **unlikely** to happen.