not have a clue (about something)
(не) знать \ (не) иметь представление о чем-либо
I have no clue what happened that day.
Другие идиомы:
- have an out
- have no business (doing something)
- have (something) in common with (someone or something)
- have keen wits
- have a good eye for (something)
- have a finger in the pie
- have (something) on (someone)
- have a familiar ring
- not have anything to do with someone
- have butterflies in one's stomach
- have had a good innings
- have legs
- hardly have time to breathe
- have growing pains
- have had its day