(White, do) different personalities of the other? Multiple personality disorder (are, is) caused by severe trauma. The challenge of sport sometimes influences (influenced, influenced) an athlete`s self-confidence. 12 Subjects connected by And a link whose parts are connected by “and”, usually takes a plural boys and girls form the class of the school. The pencil and paper are on my desk. 54 Problematic questions If collective nouns, nouns that end in s, titles and numerical expressions are used as subjects, it can be difficult to say where they take singular or plural verbs 29 1. Concordance in the number Remember: Individual subjects take verbenMaria singular works well with their classmates. Plural subjects take pluralistic verbs Players run on the field. .