Is it one of them who has or have?
The correct answer is that “one of them has.” For example: Correct Usage: "One of them has a cat." In this sentence, "one of them" refers to a single person or item out of a group.
Is one of the men plural or singular?
MAN is singular and MEN is plural. We use "man" when we talk about one person and "men" when we refer to two or more people.
Is it one of the girls who have or has?
Actually, the subject here is 'one of the girls', which is singular. So, instead of plural 'have', we must use singular 'has' here. So, the correct sentence is, “One of the girls has gone home.
Is it correct to say who has or have?
"We say "who have" when referring to plural subjects and "who has" when referring to singular subjects. For example: "Those who have completed the project may leave early." (referring to multiple people who completed the project) "The person who has the key can open the door." (referring to one person who has the key)