A singular verb would be used with a singular noun (she, Bob, Jane, truck) while a plural verb would be used with a plural noun (they, cars, books).
For example "The truck drives away." Truck being a singular noun and drives being a singular verb.
Another example
"The cars drive away." cars being a plural noun and drive being the plural verb.
WHAT ? BAHAH WHAT ARE YOU SAYIN
Could you please clearify your question so I can further assist you
<span>They are out of uniform</span>