Tìm và chữa lỗi sai, nếu không có thì đánh x

1. Our teacher is a person whọ I really respect.
2. Once upon a time there was a prince who was turned into a frog.
3. I've lost the toys which you gave me.
4. He never appreciates his wife who has devoted all her life to him.
5. She keeps telling me things which I have already known.
6. This is the dog which I love very much.
7. I can't forget the lady họ offered me the job.
8. Hue is the place which attracts many tourists.