Standard English ConventionsHardSince versus for with the present perfect
Standard English Conventions practice question
The observatory has operated ____ 1892 without a single year's interruption.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A. sinceCorrect
- B. for
- C. from
- D. during
Answer: A. since
With the present perfect ('has operated') and a starting point in time (1892), the preposition is 'since'.
Why the other answers are wrong
- B. for
- 'for' takes a length of time ('for 130 years'), not a starting date.
- C. from
- 'from 1892' would need a matching 'to' or a different verb form.
- D. during
- 'during 1892' would limit the operation to that one year.
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