1. It appears that he is the author of this letter. 2. They certainly work in an office. 3. It is unlikely that she will change her mind. 4. Probably this day will be the happiest in our life. 5. It is very possible that you will enjoy this work. 6. Surely this student has a bright future. 7. I met them by chance in a cafe. 8. Of course, my parents are already waiting for me. 9. Perhaps he has already returned from a walk. 10. Of course, sharks are very dangerous animals.
