His teacher told him that since his parents were working abroad , either his grandparents or one of his uncles allowed to e to the parents’ meeting .
A. was
B. were
C. are
D. is
网友回答
(答案→)A. was
B. were
C. are
D. is
解析：本题考查时态和主谓一致。由told判定用过去时；either…or…连接两个词作主语；谓语动词与or后的保持一致。此处与one of his uncles一致，用单数。