The stove of Dennis is electric, and Matthew's happens to be gas.
OPTIONS:
- Dennis has the higher electric bill.
- Matthew has the higher electric bill.
Dennis has the higher electric bill.

The car was quick when it used electricity instead of gasoline, because it was made to run on the
OPTIONS:
- gasoline more efficiently.
- electricity more efficiently.
electricity more efficiently.

Since Patricia knew how to use chopsticks and Christine did not,
OPTIONS:
- Patricia ate their fried rice with chopsticks exclusively.
- Christine ate their fried rice with chopsticks exclusively.
Patricia ate their fried rice with chopsticks exclusively.