Student or Learner
I would like to know the difference between "I didn't know + present tense" and "I didn't Know + past tense".
Me: Why you are not attending class?
Peter: I am sick.
Me: Oh, I didn't know you are / were sick. >>>>>>> Which one is correct ? are/were?
Me: I just bought the book for our class.
Peter: Really? Let me see.
Peter: The edition is not correct
Me: Oh, I didn't know the edition isn't /wasn't correct >>>>> Which one is correct ? isn't or wasn't ?