Third person singular spelling rules in Present Simple
He sometimes .... English with clients. (to speak)
He sometimes SPEAKS English with clients. (fait-habitude-situation permanent-futur: horaire affichée)
She ... heavy boxes at work. (to carry)
She CARRIES heavy boxes at work. (fait-habitude-situation permanent-futur: horaire affichée)
My job .. at 8:30 a.m. (to start)
My job STARTS at 8:30 a.m. (fait-habitude-situation permanent-futur: horaire affichée)