With an appropriate relative pronoun:
(1)Do you know the reason ____ she has changed her mind? (2)The woman ____ is talking to my mother is a friend of hers.
why;who/that
With an appropriate relative pronoun:
(1)Do you know the reason ____ she has changed her mind? (2)The woman ____ is talking to my mother is a friend of hers.
why;who/that