1.

1). Will be working2). Has been working3). Worked4). Will work

Answer»

The APPROPRIATE fit for the blank is ‘will have been working’ which is in the future perfect tense. The future perfect tense indicates that an action will have been COMPLETED (finished or "perfected") at some point in the future. This tense’s format is: will+ have+ the past PARTICIPLE of the verb (which can be EITHER regular or irregular in form)

The rest of the OPTIONS are cancelled as their tenses are wrong.

Hence the correct answer is option 5.



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