Monday is one day. Seven days together are one week.
A day and a week
day /deɪ/ — a long day
week /wiːk/ — seven days in a week
Try it: Maya: How long is your class? Ethan: Wednesday, and that is all. One ___. Finish Ethan's answer. (day / week / year) Answer: day — The class is on Wednesday and no other day, so it is one day.
A month and a year
About four weeks together are one month. Twelve months together are one year.
month /mʌnθ/ — four weeks in a month
year /jɪr/ — twelve months in a year
Try it: Maya: How long is the art class? Ethan: From the first line of this calendar page to the last. One ___. Finish Ethan's answer. (month / week / year) Answer: month — A calendar gives each month its own page, so one whole page is one month.
Try it: Ethan: I am the intern here from the first page of the calendar to the twelfth. Maya: All twelve pages. One whole ___. Finish Maya's answer. (year / month / week / day) Answer: year — All twelve pages of a calendar together are one year.