"Have you been to the Tower of London?" Mary asked me. Mary asked me ..... to the Tower of London.
a) had i been b)whether i was
c) if i have been d) if i had been
"Have you been to the Tower of London?" Mary asked me. - "Вы когда-нибудь были в лондонском Тауэре?" - спросила меня Мария.
Mary asked me if I had been to the Tower of London. - Мария спросила меня, была ли я в лондонском Тауэре.