make each word its own sentence:

artillery
frayed
oblong
plunge
ripen
somber
taut

Artillery thundered in the distance.

The edges of the old flag had frayed over time.
The table had an oblong shape.
Divers prepared to plunge into the deep blue sea.
As summer progressed, the fruits began to ripen on the trees.
The room had a somber atmosphere after the news was delivered.
The rope was pulled taut by the strong hands of the sailors.