Long,long time ago,there was a mountainAt the top of the mountain _______ ,in which an old monk used to tell stories

(2013江西)Kate’s dad is getting old．She will go back home to see him________it is convenient．

Did you listen to the program yesterday—Yes. I can’t believe I heard her singing ______ the radio.

dating back perhaps as far as the SouthernDynasty, _________ its new meaning last September.

____ you want to remember its usage, you’d better make a sentence with the new word