German phrase
Wer hat den Schlüssel für ~?
Meaning
Who has the key to ___?
When to use it
Asks who has the key. Use it when looking for a lost or shared key.
Example dialogue
Ich finde den Schlüssel nicht.
I can't find the key.
Wer hat den Schlüssel für das Büro?
Who has the key to the office?