Fill in the blank with the correct option:By next Saturday, I _ (work) on this painting for exactly one month.
Correct answer: A. will have been working
- A. will have been working
- B. will be working
- C. will work
- D. worked
Explanation
Option A is correct, which is a future perfect tense. The future perfect tense refers to a completed action in the future. When we use this tense we are projecting ourselves forward into the future and looking back at an action that will be completed some time later than now. It is most often used with a time expression.
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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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