ONCE4DWith 5A and 7A, common start to a story[----]UPON5ASee 4D[----]ATIME7ASee 4D[-----] is pretty great! (And also let me get a downs only for once!)
I also liked the 31 days of Marching. A correction: At 0 C water and ice are in equilibrium. Items other than pure water are more likely to be liquid. The clue might better be something like "What freezers are kept below in Aus" Finally, Once Upon A Time was fun!