The soldiers walked for thirty ____ hours to reach the other side of the mountain.

Christina used her hunting ____ to survive in the woods for a week.

Benjamin Franklin’s most ____ invention is probably the lightning rod since most people know the story behind this invention.

The ___ hostess made us feel at home as soon as we walked into the restaurant.

With several clogged arteries, the unhealthy man had a serious ___ to lose weight and get fit.