C. Choose a or b. 1. a. Reporters don't work in an office, b. Reporters 2. This is __ and Andrew's room. It's always a mess. b. Tom 3. The ball is on the table. b. children's 4. Those mobiles are my b. parents a. Tom's 5. football boots are these? Are they Steve's? a. Whose b. Who's 6. The ___ books are on the floor. a. girls b. girl's 7. A__ job is sometimes very dangerous, a. police officers' b. police officer's 8. Are these and Linda's rackets? a. Mary's b. Mary a. childrens a. parent's