뭘 어떻게 해야

what should I do

→ 뭐+를
phrase Rare #32,568
what should I do The subject is often omitted, so the phrase can refer to what someone else should do depending on context.
KO: 이제 뭘 어떻게 해야 할지 모르겠어요.
EN: I don’t know what to do now.