Imagine you are in a large, quiet, cubicle-filled office. Or in a large, empty public place. You think you are alone. But you hear some indistinct ruffling somewhere nearby – and you are a little startled.
An English speaker in this situation might say something “Hello?” Now, the analog to “hello” in other languages are often time-sensitive, for example: bonjour/bonne nuit in French, dobroye utro in Russian, konnichi wa in Japanese. It would seem odd to me, on first thought, that a French person would call out “bonjour?” in response to the situation above. But maybe that’s the right idiom, after all.
So, just how do speakers of other languages verbally handle the situation above? Analogs of “who’s there?” (which also work in English)? Alternative greetings (might a Russian say “privyet?”)?