In "The Snowstorm," Emerson is referring to the winds howling in the sky when he states the metaphor of "the trumpets of the sky."
Who is, that's the way they are using it
Anne Sullivan, while describing her struggle to work with a young Helen Keller, wrote, "...the more I think, the more certain I am that obedience is the gateway through which knowledge, yes, and love, too, enters the mind of the child."
Id say that the complete predicate would be “have made a decision” and the simple predicate would be “have” or “have made.” Sorry if im wrong. Good luck