(ud.) / salir antes de las cinco

The answer with the conjugations would be:

Usted salió antes de las cinco.

You went out before five.

Since (ud.) is singular for formal you you would take away the -ir from the stem and add -ió.

If it was (Uds.) then it would be more that one person and would be:

Ustedes salieron antes de las cinco.

Hope this helps! :3

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i just took a quiz it goes 4,1,3,2