Замените следующие действительные обороты страдательными:

1. Many facts accounted for the rise in the price of tin.
2. They may object to your plan.
3. They must comment on this event.
4. Nobody laughed at him when he said it.
5. You should refer to this quotation more often.
6. You must listen to your teacher very attentively.
7. You must not interfere with them.
8. You should not insist on it.

1. The rise in the price of tin was accounted for by many facts.
2. Your plan may be objected to.
3. This event must be commented on.
4. He was not laughed at (by anybody) when he said it.
5. This quotation should be referred to more often.
6. Your teacher must be listened to very attentively.
7. They must not be interfered with.
8. It should not be insisted on.