[|] Answer [|]
![\boxed{In \ the \ past}](https://img.qammunity.org/2019/formulas/english/middle-school/dfnm5hiyfujc1r9jd2mn1nn40akj79l6g0.png)
[|] Explanation [|]
Sentence 3: But, unfortunately that was _________.
Best Fit: In The Past
The word "Was" helps us determine the correct transition for sentence three. The word "Was" means it has already happened.
Knowing this, the proper transition would be "In the past."
In the future, tomorrow and yesterday do not correctly fit the blank space. They would not make sense, and they would also be grammatically incorrect.
![\boxed]](https://img.qammunity.org/2019/formulas/english/middle-school/ep9mxwooq3aa5ca8atx4j3es8h00zxb2mr.png)