Select the option which fits appropriately in the blank:She _ (work) in the factory for fifteen years by next year.
Correct answer: C. will have been working
- A. will work
- B. will be working
- C. will have been working
- D. had worked
Explanation
Future perfect continuous used to describe events that will continue up until a point in the future, emphasising their expected duration. So, the best answer is She will have been working in the factory for fifteen years by next year.
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About Subject-Verb Agreement
Subject-verb agreement requires the verb to match the true subject in number and person, even when other words intervene. Questions cover collective nouns, compound subjects, indefinite pronouns, either and neither, relative clauses, quantities and inverted sentences, where proximity can falsely suggest the wrong verb.
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