Doing a test, I had to choose between two possible responses to the question
Are we writing a composition tomorrow?
The options were
I hope not
I'm afraid so.
I chose option Two, which was sooner an intuitive guess than a conscious choice.
Now I'm doubtful about whether I was right.
Would the option "I hope not" be correct if the question were
We are not writing a composition tomorrow, are we?
If I made a mistake, can you explain where I was wrong? And if I was right, why the "I hope not" response is wrong. It seems I'm missing something and I can't make out what.