Which tenets demonstrate correct subject and verb agreement the grains of sand slip through my fingers for the grains of sand slip through my fingers

Number and person concord (Agreement).  Number concord, in the standard English,  is most apparent between a singular or plural subject and the verb in the third person of the simple present tense:. Singular: That house is beautiful. He likes to ride his bicycle. Plural: Those houses are beautiful. They like to ride their bicycles. The grains of sand (plural subject) agreeing with slip (plural verb).

this is b. how railways dealt with people riding the trains without paying