单选题His teacher told him&nbsp

问题补充：

单选题Histeachertoldhimthatsincehisparentswereworkingabroad,eitherhisgrandparentsoroneofhisuncles______allowedtocometotheparents’meeting.A.wasB.wereC.areD.is

答案：

A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。