Modal Verbs — Simulator 6
Modal Verbs — Simulator 6
Level 6 / 10 • Negative Deduction • Elimination Logic
Instructions: Choose the correct modal or modal phrase.
This simulator focuses on eliminating impossibilities
using evidence from the context.
Quick Guide:
• must have → past certainty
• might have → past possibility
• can’t have → past impossibility
Strategy: If evidence contradicts the action → use can’t have
1. The lights are off and the store is closed. They ___ forgotten to lock the door.
- might have
- must have
- should have
- can’t have
2. He arrived on time, so he ___ missed the train.
- might have
- can’t have
- must have
- should have
3. The road is dry. It ___ rained last night.
- can’t have
- might have
- must have
- should have
4. She passed the exam easily. She ___ failed it.
- might have
- should have
- can’t have
- must have
5. He looks exhausted. He ___ slept very well.
- might have
- can’t have
- must have
- should have
6. The email was sent this morning. She ___ forgotten to send it.
- might have
- should have
- must have
- can’t have
7. He was seen at the meeting. He ___ been absent.
- might have
- should have
- can’t have
- must have
8. The package arrived today. It ___ been lost.
- can’t have
- might have
- must have
- should have
9. She answered every question correctly. She ___ misunderstood the instructions.
- might have
- can’t have
- must have
- should have
10. The restaurant was full. We ___ arrived too early.
- might have
- should have
- must have
- can’t have
Your Score
Interpretation:
9–10 = Excellent negative deduction skills
7–8 = Review contradiction logic
≤6 = Repeat Simulator 6
Refresher — Negative Deduction
- can’t have → impossible (evidence contradicts)
- must have → certain past conclusion
- might have → possible explanation
Answer Key
1) can’t have
2) can’t have
3) can’t have
4) can’t have
5) can’t have
6) can’t have
7) can’t have
8) can’t have
9) can’t have
10) can’t have