In some countries, the disease burden could be prevented through environmental improvements.

He is not popular and has a lot of enemies.

After many months of grueling work and painful injuries to her shoulder and back, Susan realized that her dream of swimming the English Channel was unattainable.

The soliders will do anything to halt the enemies from entering.

Maureen usually felt depressed on Mondays, because she never got enough sleep on the weekends.

There has been insufficient rainfall over the past two years, and farmers are having trouble.

On the whole, the rescue mission was well executed.

Melanie thought the issue at hand was not morally just, and consequently she would never endorse the petition circulating throughout her neighborhood.