Which sentence uses the correct subject-verb agreement?
1.One of my brothers are going to help me.
2.Rain and snow makes the streets slippery.
3.Rain or snow make the streets slippery.
4.One of my brothers is going to help me.
the verb has to agree with the noun(s). A singular verb would have to go with a singular noun while a plural noun would go with a plural verb. In subject verb agreement the singular verb ends with 's'.