1. The children are playing outside; I think ____ are having a great time.
2. I received a letter from my sister, but ____ didn't have time to read it yet.
3. My dog is feeling a bit sick today. I hope ____ will feel better soon.
4. She picked up the book from the table.
5. He has figured out the best way to solve the problem.
6. The project is coming along well as we expected.