Помогите!) Turn the sentences from Active into Passive.

The students of this group always do their tasks properly. 2. I bought this coat last year. 3. Could you finish the translation by next Thursday? 4. Must I stop it? 5. They didn’t pay him for his work. 6. We have already discussed this problem. 7. He has not repaired the car yet. 8. The guide is showing a precious stone to the tourists. 9. Has she fed the cat? 10. I promise, I’ll answer your questions very soon. 11. Our cat killed a rat yesterday. 12. They are publishing this article in their next month journal.

The tasks are always done properly by the students of this group . 2. This coat was bought by me last year. 3. Could the translation have been finished  by next Thursday? 4. Must it be stopped by me? 5. He wasn't paid  for his work. 6. This problem has been already discussed . 7. The car has not been repaired  yet. 8. A precious stone is being showed by the guide  to the tourists. 9. Has the cat been fed ? 10. I promise,  your questions  will be answered  very soon. 11. A rat was killed by our cat   yesterday. 12. this article is being published in next month journal.

1The tasks are always done by the students of this group properly.2This coat was bought by me last year.3Could the translation be finished by you by next Thursday?4Must it be stopped by me?5He wasn't paid by them for his work.6This problem has already been discussed by us.7The car hasn't been repaired by him yet.8A precious stone is being shown to the tourists by the guide.9Has the cat been fed by her?10Your questions will be answered very soon, I promise.11A rat was killed by our cat yesterday.12This article is being published by them in their next month journal.