aní kotév séfer be-septémber u-ve-október.
(colloquially it will be ve-be-október)
Is it necessary to put ב before both months?
It's preferable. But you may encounter בספטמבר ואוקטובר.
Those aren't NaNoWriMo!
No audio, English sentence is not correct, would not accept my Hebrew translation, nor English correction. since this is the last question, i can't get past it