what

let's see; what have we got here

Nothing

which (of three or more) / which one /

don't cry over spilt milk

(poetic) a mountain where the first-person speaker resides / (by extension, poetic) Synonym of 比叡山 (Hiei-zan): Mount Hiei, where Saichō erected Enryaku-ji, the first Tendai monastery

when

when

at any time

how old are you?