1. fi
英語 "という言葉fifteen"(fi)集合で発生します。
Ewa Jump with Joey 92. fifteenth
This drawing dates back to the fifteenth century.
She celebrated her fifteenth birthday yesterday.
On the fifteenth of August, thousands of people fly kites.
Tom needs to renew his passport before the fifteenth of next month.
The concert is November the fifteenth.
‘Is today the fifteenth?’ ‘No, it’s the fourteenth.’