найти 1 ошибку в этом тексте, и объяснить ее: MARY have you ever read Harry Potter books?
PETER Yes, I _have__. I read all the books three times. I read them 2 years ago last time. I was on holidays and I had a lot of time for reading.
MARY Who has written Harry Potter books?
PETER J. Rolling has written them. She is a great author. She has written many interesting books. And K. Columbus shot 5 films based on her books.
MARY I always want to read Harry Potter books. I am going to do it on my holidays.