Fill in the Blanks Time vocabularyOnline version You will have to fill in the blanks with the vocabulary that you have learned! by andrea avendaño eslava 1 century month fortnight minute millennium year season an day decade half week hour hour There are 60 seconds in one . There are 60 minutes in one . 30 minutes is called . There are 24 hours in one . There are seven days in one . In British English , a period of two weeks is called a . There are about four weeks in one . A three - month period ( spring , summer , fall , or winter ) is called a . There are twelve months in one . A period of ten years is called a . There are one hundred years in one . A period of one thousand years is called a .