I. Choose the correct form.
1. I could be wrong, but I don’t think so.
2. I will be able to tell you tomorrow.
3. He can speak ten languages.
4. I hope to can / be able to see her tomorrow.
5. She has never could / been able to do this.
6. This research can / could be useful for you.
7. I can / may see that you like this one.
8. If I knew the answer I can / could tell you.
9. Can / Could you hear that noise? It’s terrible.
10. You can / could be right.