1. No one knows the author's name, as he chooses to  remain anonymous. 2. The children had to sit perfect still 
while the photographer was taking their picture. 3. You cannot draw 
graffiti on that man's house, it is private property. 4. Children often express 
their artistic creativity through finger painting and drawing. 5. Mr Anderson is 
giving a presentation on green transport at the town hall this 
evening. 6. Sarah has joined a community action group which helps find foster 
homes for homeless animals. 7. John looked after the injured bird until it
 made a full recovery. 8. She loves children and often gets involved with children's 
charities. 9. Cindy burst into tears when a car almost ran over her 
dog.1.The Eiffel Tower( is) visited by 
about 6 million people each year. 2. The exhibits in the museum must not 
(be) touched. 3. Luckily, the fire (had been) put out before 
anyone got hurt. 4. This film (was being) shown to the students when I
 came into the classroom. 5. Do not worry. A fax (is being) sent by my 
secretary right now.