That's not a full sentence. "the glacier" is a phrase, not a sentence.
<span>Because she was kidnapped by the Blackfoot and sold to the Hidatsa. She was raped and beat there. The Hidatsa killed her only friend there. The dog that she named.</span>
Snack, because it is an object but not specified like ben, cousins (because people) or bedtime
Gandalf knows that Bilbo is in trouble and has gone out of his way to find him. Bilbo also sees that the landscape Gandalf has talked and "seen" has changed.