German phrase
Was soll ich tun, wenn ~ verloren geht?
Meaning
What should I do if ___ gets lost?
When to use it
It asks what to do. Use it when something is lost. It is polite and concerned.
Example dialogue
Was soll ich tun, wenn mein Pass verloren geht?
What should I do if my passport gets lost?
Geh am besten sofort zur Botschaft.
It's best to go to the embassy right away.