A six-year study of nearly half a million people in the United Kingdom has found that people who were active at night ( ) 10 percent more likely to die during that time period.
1. were
2. being
3. to be
4. be
A six-year study of nearly half a million people in the United Kingdom has found that people who were active at night ( ) 10 percent more likely to die during that time period.
1. were
2. being
3. to be
4. be