What is the homograph for In short time to------the building when it became --------there was a fire?

The homograph for the blank in the sentence "In short time to ______ the building when it became ______ there was a fire" is "to".

Here's the completed sentence:

"In short time to to the building when it became to there was a fire."

This sentence would likely be corrected to:

"In short time to reach the building when it became clear there was a fire."