It is that it is unrealistic to believe that wars are not deadly.
Answer:
The children <u>have found</u> the lost puppy
Explanation:
That's the correct sentence structure, if you use "is finding" or "have find" it just doesn't sound correct...
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.
He does that to give an extra significance to the things her reapeated