No, not unless it was beginning the sentence. Capitalize, by the way.
Siblings? Capitalize the s? Use shift? Is that it? I don't understand your question.
South Carolina and South Dakota are U.S. states. They begin with the letter S.
Never.
The Last letter to U S is found in United States of America
15
Yes.
phases
No the s in "secondary" does not need to be capitalized since Postsecondary is usually seen as one word.
South Carolina South Dakota
I count twenty.
Socialization is a twelve letter word that begins with "s"
U.S. states that end with the letter a:AlabamaAlaskaArizonaCaliforniaFloridaGeorgiaIndianaIowaLouisianaMinnesotaMontanaNebraskaNevadaNorth CarolinaNorth DakotaOklahomaPennsylvaniaSouth CarolinaSouth DakotaVirginiaWest Virginia