Question

are the phrases "I didn't know" and "I didn't see" and "I didn't hear" and "I didn't notice"
and "I was not informed" and "nobody told me "and "I was not paying attention" the same the same?

Answer 1

Answer:

Your first reaction may be to say, "I'm sorry to hear that,” to people when they’ve received terrible news or are grieving a loss.

Explanation:

Answer 2

Yes most of these could work but with I didn’t hear and nobody told me I would say that these are not interchangeable in some situations.