1. A lot of time is often spent together by my relatives.
2. Mathematics is usually taught at school.
3. A museum was visited by them last Sunday.
4. Her friend will be met by Helen near the University tomorrow.
5. My new friends will be introduced to the parents tomorrow.
6. A custom house for the examination of foreign goods was set up in 1749.
7. The custom house was replaced by the fortress in 1761.