Answer:
Before.
Explanation:
Subordinating conjunctions are those types of conjunctions that act as the joining words for an independent clause and a dependent clause. From the above provided sentence,
Glinda tells the Wicked Witch, "Be gone <u>before </u><em>somebody drops a house on you!</em>"
the bolded words "Be gone" is the independent clause while the bold, italicized words <em>"somebody drops a house on you!" is the dependent clause</em>. And in between these two clauses is the word <u>"before'</u> which is a conjunction. This <u>is the subordinating conjunction. </u>
Asking them how they are and bringing up a recent topic
The author's argument about life in the mountains would be that life was emotional and beautiful. According to the text, it states, "while the heights and the meadow lands were turning gold under the rising sun, which was just appearing above the topmost peaks." Another piece of evidence is: "<span>The roaring in the trees always stirred a strong emotion within her and seemed to draw her irresistibly to them." </span>This supports the author's argument that life in the mountains was actually very enchanting.