31、His family                   music lovers.
　　A．all are            B．are all            C．is                   D．are being
　　32、A professor and a writer                   present at the meeting.
　　A．was         B．is      C．were        D．had been
　　33、The pair of shoes                       worn out.
　　A．was                B．were        C．have been      D．had been
　　34、The students in our school each                     an English dictionary.
　　A．have        B．has                 C．had                D．are having
　　35、More than one answer               to the question.
　　A．have been given    B．has been given      C．were given     D．had given
　　31、B
　　32、C
　　33、A  因此句主語是pair，所以用單數。
　　34、A  因此句主語是the students，所以用復數。如果each作主語，謂語動詞則用     第三人稱單數形式。如：Each of the students / Each student has an English dictionary.
　　35、B  此句中的主語是one answer，所以謂語動詞應與它保持一致。