Plan is the answer, it helps to replace the word with one of the answer choices.
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it would be "would" because she was home and the keys are at home
Tempests and storms. A tempest is a type of violent and windy storm. Wheatley uses the repetition of the word storm, to clarify and reinforce the idea that the American Army under the leadership of George Washington is one of a brutal, unstoppable physical force. The image brought about by the idea of a tempest is a completely uncontrollable and menacing force.
I think that the italicized word is "trained" as it's a participle and there is no other participle or gerund! A participle is a verb form that can be used to modify a noun.
