I don't have time to answer all of them but here is 2-7. 2.became 3.held 4. it's either "him singing" or "his singing" 5.has 6. should have 7. walked
I believe because he only wanted to talk about himself and movies.
I think Grendel get stuck in a tree because of his careless curiosity of the world above him, that of the humans. He know nothing about that world because he was used to his own world in the underground however he still get tempted to explore. He was also attacked by a bull there because he looks different from the rest of the creatures above.
Answer:
D. "My calculator! You don't think I take it to bed with me, do you?"
Explanation:
I picked the answer myself. I hope this helps!