A. When two subjects that share a verb are linked by or, nor, or but (also), the verb agrees with whichever part is closest.
Either Bob or the Joneses customarily dance at the festival.
Either the Joneses or Bob customarily dances at the festival
Neither my rights nor my reputation was considered.
Neither my reputation nor my rights were considered.
3. Not (only)/But (also)
Not hard work but sponsors guarantee one a good position in life.
Not only Bob but also his sisters like jazz.