There you are! I was wondering where on earth you'd got to.
3 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 00:27:01.822 in the Blu-ray version of the movie.
Quote context
[...]
- Gosh! We've forgotten the linen cupboard. Come on!
- Goodbye.
- Sally! Sally, Where are you?
- I can't find her anywhere. Sally! Sally! Sally?
- There you are! I was wondering where on earth you'd got to.
- I found another door behind a wardrobe, then along a corridor. Then into the room at the end.
- Oh, there? But that's where the whole thing happened. Hey, Sally!
- Meet your new nanny, Mrs Watson.
- I found myself in a sort of nursery.
- I didn't know any of the children were staying the night.
- Why, yes. This little boy said he was sharing a room with his sister.
- He told me his name was... Francis Kent.
[...]