Answer:
First: Check for spelling or grammar mistake, and fix those. Second, check the formatting and structure, you could have the most perfectly grammatically correct piece of writing, ruined by the fact that nothing is in order. Thirdly, look at words and phrases to make sure you are not using any ambiguous language.
Answer:
The battle takes place in an underwater cave; Beowulf wins.
Explanation:
After killing Grendel, Beowulf moves on to kill another monster - Grendel's mother. She lives in a cave under the lake and Beowulf goes there to fight her. Ultimately, after a very long fight, he manages to grab hold of a giant sword within the cave and pierces the monster's skin. As a result, Grendel's mother dies and Beowulf emerges victorious.