Question

I ...... Be twenty five next birthday
(Carrect auxiliary)

Answer 1

Answer:

will is correct auxiliary PLEASE MARK AS BRAINLIST ANSWER

Answer 2

I will be twenty-five next year.

• "Will" is a modal auxiliary verb that shows the modality of prediction or spontaneous decisions.
• Here will be used to show the prediction of turning twenty-five in the next birthday.
• Here "will" is also used to express future tense as it is talking about something happening in the future time expressed by the term "next".

The correct auxiliary used is - will.