Ответ:

Заполняем пропуски, записывая даты цифрами или словами:

№We writeWe say
11 Maythe first of May
215 Octoberthe fifteenth of October
33 Aprilthe third of April
431 Julythe thirty-first of July
522 Septemberthe twenty-second of September
618 Januarythe eighteenth of January
79 Februarythe ninth of February
820 Junethe twentieth of June
912 Augustthe twelfth of August
105 Novemberthe fifth of November