合鍵を持ってきてください。

duplicate key; pass key; master key; skeleton key

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to hold (in one's hand); to take; to carry; to possess; to have; to own; to maintain; to keep; to last; to be durable; to keep; to survive; to take charge of; to be in charge of

to give; to confer; to bestow; to kindly do for one; to oblige; to favour; to favor