nobody but Mr.Green and Bob____in the classroom yesterday.A.is B.was C.are D.were答案是用B``可是为什么要用B?
问题描述:
nobody but Mr.Green and Bob____in the classroom yesterday.
A.is B.was C.are D.were
答案是用B``可是为什么要用B?
答
be要用就近原则
答
因为在be动词前是单数!
答
首先,后面有yesterday,表明要用过去式
前面有and,be要用就近原则,用第三人称.