Откройте скобки, используя активный или пассивный залог: The dictation (to check) by the teacher yesterday If you (not

1. The dictation was checked by the teacher yesterday. 2. If you do not buy coffee, we shall drink tea. 3. If he did smoke, he would not feel so bad. 4. If she had warned me, I would have done the work in time. 5. I have been waiting for a letter from my brother for a month already. 6. You have been playing with a ball for three hours already. 7. He has been working here for five years.