Complete the sentences using the given wordsmith the right forms. Remember + positive, - negative.
Listen, know, be, buy, forget
2. If I ...that it was your birthday, I would have prepared a present for you. (+) positive
3. I ...so angry if you had apologized in time. (-) negative
4. I would have written to you if I ...your email address. (-) negative
5. If you ...to me, you wouldn't have chosen that job. (+) positive