同意蒋老师的解答。在正式文体或英语考试中，Either...or…或Neither...nor...连接两个主语时，其后的谓语动词原则上采用“就近原则”，但在口语或非正式文体中谓语动词用复数形式也是可以的。章振邦《新编英语语法概要》指出：

在非正式语体中，由neither...nor连接的两个非复数名词作主语，也可作为复数处理，谓语动词用复数形式。例如：

Neither the teacher nor the student are interested in the book.

Neither my father nor I were present that day.

在有or或者either...or连接的两个非复数名词作主语的情况下，谓语动词间或也可采取复数形式。例如：

If either David or Janet come, they will want to drink.

Reward or punishment are meted out quite independent of human interfrence.

_______ either you or I going to type the letter of recommendation.

A.Is        B.Are        C.Am        D.Be

用单数谓语还是复数谓语?

赞同蒋老师的解答

either...A or B +谓语+其他。谓语动词单复数由靠近谓语动词的那个主语来来决定，即B来决定。因此肯定句用"am"边变成一般疑问句由于人称发生变化，变成第2人称因此，谓语用“are" 所以答案B为正确答案。

除了以上either A or B,还有以几个并列连词用法同上(即就近原则），现补充归纳如下

(1)neither A nor B+谓语+其他（既不是A也不是B）

Neither you nor he is right. 
= Neither he nor you are right.

Neither you nor I am wrong. 

(2)not only A but also B +谓语+其它（不仅A而且B）

Not only Ann but also her parents stay at home every Sunday. 
= Not only Ann's parents but also she stays at home every Sunday.

Not only the students but also the teacher wishes for a holiday. 

 Not only they but also I am keen on sports.

(3)not A but B+谓语+其它（不是A而是B）

Not you but your father is to blame.

不是你，而是你的父亲该受责备。

(4)There be A and B+谓语+其它（有A和B）

There is a book and some pencils on the desk. 
=There are some pencils and a book on the desk.

（备注：以上1/2/3/4句中并列连词在连接2个并列主语的时候，其谓语动词应采用就近原则，即谓语动词单复数由离谓语动词最近的名词单复数决定。）