Student or Learner
--Thank you so much./ I'm sorry for hurting you.
--It's nothing/It was nothing.
Can both 'It's nothing' and 'It was nothing' be used when people say 'Thank you' or say sorry to us?
Many thanks in advance.
You can say that, but it's better to say 'You're welcome' in response to 'Thank you'.
When people say'I'm sorry for hurting you' you can also say 'That's OK', 'I'll be fine', 'Don't worry about it', 'No harm done' etc.