Answer:
A prepositional phrase is a modifying phrase which includes a preposition (in this case, "over") and the object of the preposition (in this case, "the mantelpiece.")
Answer: there is an error in sentence 1.
Yes it is a metaphor because he does not literally have a key to her heart. It is just figurative speaking.
I believe it is to express so D
What do you mean what conflict does mystique face?