单句改错。 1. He told us about the countries where he had visited. _______ 2. Egypt is a country where is famous for its pyramids. _______ 3. China is the country where he spent the best part of his life. _______ 4. The days when we spent together cannot be easily forgotten. _______ 5. The house stands at the place that the two roads meet. _______ 6. We shall visit the college where his father teaches there. _______ 7. I know the reason that she looks so worried. _______ 8. He left me the book, that is very useful for me. _______ 9. This is the room which food is kept. _______ 10. April 15, 1976 is the day when we'll never forget. _______ 11. The man came yesterday is our English teacher. _______ 12. The students are playing football on the playground are from Class Two. _______ 13. This is all which I can do for you. _______ 14. Can you think of anyone who's house was here? _______ 15. The watch that Mother bought it for me works very well. _______