The correct revision is..
"You're being dramatic," said Eliza.
"I don't think it's dramatic to say that you're going to fail the humanities class if you don't pass its final exam," replied her mother.
You're is short for you are. It's is short for it is. You use its for possession.
Answer:
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The compound verb is earned good grades.
Determined is defined as <span> having a strong feeling that you are going to do something and that you will not allow anyone get in your way.
Stubborn is defined as </span><span>having or showing dogged determination not to change one's attitude or position on something, especially in spite of good arguments or reasons to do so.
Connotation of determined and stubborn is being strong-willed and resolute. When you are determined, you have decided to do something. When you are stubborn, in doing what you have to do and presented with arguments, you still decided to continue what you are doing regardless of what others say.
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