The correct option is C Different ways.
We
divide time in different ways. Often we use words like 'now, some time
ago, after some time , or 'today, yesterday, tomorrow, or 'this year,
next year' etc.When we use these words, we are actually measuring time
in our minds.'Now' , 'today' and 'this year' are terms that indicate the
present.'Some time ago' , 'yesterday' and 'last year' are terms that
indicate the past.'After some time', 'tomorrow' and 'next year' are
words that indicate the future.