By this time next year, I ____ all my exams.

Will take

Will have taken

Have taken

None of these

By this time next year, I will have taken all my exams.

اگلے سال اس وقت تک، میں اپنے تمام امتحانات دے چکا ہوں گا۔

"Will have taken" is used for future perfect tense, indicating an action that will be completed by a specific time in the future.

Here, it correctly expresses that all exams will be completed by this time next year.