The passage lists a few things which would lend towards the idea of him being a monster. First, it says "god's anger bare he." referring, presumably, to the abrahamic god famous for his wrath, showing that Grendel was exhibiting intense rage. Second, it uses the sentence "The monster intended some one of earthmen in the hall-building grand to entrap and make way with" which, while a written a little backwards by today's grammar rules, says that he is planning to take hold of and kidnap some of the men in the hall, something only a monster could do.<span />
Answer:
The kids behaved when David McLean because David wanted to take over the house and the kids might kill him.
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Answer:Johnny, Ponyboy, and Dally, worried about the kids, rush into the burning church to rescue them (though Dally does so hesitantly)
Explanation:there you go...