Use the prefixes\( im\- \)or \(in\- \) with the words in the sentences below

1.The train tickets didn’t cost very much. They were \( **\.\.\.** \) expensive.2. Jonny wasn’t paying attention to his teacher. He was\( **\.\.\.** \) attentive.3. It’s not possible to learn a new language in just one day. It’s\( **\.\.\.** \) possible .4. My friend always finds it difficult to make decisions. He’s very\( **\.\.\.** \) decisive.5. You don’t have to wear a suit and tie to the meeting. It will be \( **\.\.\.** \) formal.6. Don’t be \( **\.\.\.** \) active. Try to be more active and get more exercise.7. The diamond wasn’t perfect. It was \( **\.\.\.** \) perfect.8. People may think you are\( **\.\.\.** \)polite if you forget to say, “Thank you.”9. My son’s room was very messy. I can’t describe it. It was \( **\.\.\.** \) describable.10. The medicine I took didn’t help me. It was \( **\.\.\.** \) effective.11. It wasn’t nice to say that your friend was stupid. It was\( **\.\.\.** \) sensitive.12. I can use my driving license in Canada but it’s\( **\.\.\.** \) valid in other countries13. The money I have isn’t enough to buy a new car. It’s\( **\.\.\.** \) sufficient.14. Killing another person is usually illegal and\( **\.\.\.** \) moral.15. The number of mistakes I made was \( **\.\.\.** \) significant. I still got an A+ on the exam!16. I don’t believe you saw a space alien. It’s possible but \( **\.\.\.** \) probable.