1. Exercises are often done every night.
2. The room is usually decorated at weekends.
3. These trees are often watered by Nam and Peter.
4. The watch was bought at the shop.
5. The house was built in 1950.
6. public transport will be used by students to go to school.
7. a great deal of electricity will be generated by solar power this summer.
8. A hydro power station will be built in this area.