Question

She has been working here years.

• A. since
• B. for
• C. in
• D. by

Answer 1

Answer:

B. for

Prepositions of Time - 'For'

• 'For' is used to indicate a duration of time. It answers the question 'How long?'.
• It is commonly used with periods of time such as:
  • Days: for two days
  • Weeks: for three weeks
  • Months: for six months
  • Years: for ten years
  • Hours: for five hours
  • Minutes: for twenty minutes
  • Specific periods: for a long time, for a while, for ages
• Example Usage in Sentences:
  • She has been studying for three hours.
  • They have been married for fifty years.
  • I have lived here for a decade.
• Distinction from 'Since':
  • 'Since' is used to indicate a starting point in time, often with perfect tenses (present perfect, past perfect).
  • Example: She has been working here since 2015. (Here, 2015 is the starting point, not the duration).
• Competitive Exam Tip: When you see a blank followed by a period of time (like 'years', 'months', 'weeks', 'days', 'hours'), consider 'for' as the most likely preposition to indicate the duration. If a specific point in time is given (like a date or a specific hour), 'since' is usually the correct choice.