    Sentencé 1: On--average.. the shidents  suffered’~at . least one: of.” the”  symptonis, between, three and-Ak:times  in the last year.    Sefitence: 2:' Based” on having at “least  one.of. these symptoms: ,-mogt students,  were. hung over. hetween: three and a  times im, the past year .