1. Much time is spent together by my family.
2. The mathematics is usually tought at school by him.
3. a museum was visited by them last Sunday.
4. Helen's friend will be met at the University tomorrow by her.
5. My new friends will be introduced to my parents tomorrow by me.
6. A custom - house was set up for the examination of foreign goods in 1749 by the people.
7. the custom-house was replaced by the fortress in 1761.
8. The don river is usually nicknamed as "Father Don" by the inhabitants.
9. Rostov-on-Don is always called the gateway to the Caucasus by the people.
10. That church will be restored next year by them.