Раскройте скобки употребляя глаголы в форме present simple past simple или past continuous
Once, while i (to walk) in a park of london, i (to see) an old man.
he (to sit) on a bench holding a book in his hands.
i (to see) that the book (to be) of great interest.
it (to be) a very old copy of early Byron's works.
i (to look) at the old man and (to understand) that he (to know) that i (to sit) because of him and the book.
i (to smile).
"it is the last i (to have)", he (to say) and (to stretch) it out to me.
i (to open) the book and (to look) at the date: it ( to be) a remarkable book.
"i (to have) a hard life and this book (to be) a comfort to me. But i have to sell it," (to say) the old man.