Make the underlined words more formal, using words from C on the vocabulary section.

1. The link between smoking and lung cancer was shown decades ago. established
2. Anyone looking for employment in the film industry faces a tough time.
3. Social scientists often use official statistics in their research.
4. How often does the temperature fall to below zero?
5. If there is a fire, sound the fire alarm right away . Do not try to put the fire out.
6. Poverty is a basic issue in the world today.
7. This problem happens when the computer’s hard drive becomes full.
8. The doctor gave the patient a new drug that had not been fully tested.