finished, You will have achieved a great deal by the end of the year, Will you have finished the research by next Friday?, She will have written five chapters by the end of the month., They will have built the bridge by June., duration , By next Friday, I will have been working on this report for two weeks., By 2030, scientists will have been developing AI technology for decades., She will have been writing the book for months by then., They will have been building the bridge for over a year by June..

Future perfect simple/continuous

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