YOU SAID:

I will be taking the exam that day

INTO JAPANESE

その日私は試験を受けるだろう

BACK INTO ENGLISH

On that day, I will take the exam.

INTO JAPANESE

その日私は試験を受けるつもりです。

BACK INTO ENGLISH

I am going to take the examination that day.

INTO JAPANESE

その日私は試験を受けるつもりです。

BACK INTO ENGLISH

I am going to take the examination that day.