Answer:
2. An oil spill has been reported in Mexico.
3. The robbery took place during the early hours this morning.
4. The player has not been selected for the Olympic team.
5. Dinosaurs may have been wiped out when an asteroid hit earth.
6. A climber who fell 100 feet down a steep ridge is recovering well.
7. It is expected that there will be an announcement on tax increase tomorrow.
8. There are no witnesses.