In my pencil-box a pen two pencils and three rulers.A. there beB. there areC. there isD

问题补充：

In my pencil-box, a pen, two pencils and three rulers.

A. there be

B. there are

C. there is

D. it has

答案：

A. there be

B. there are

(答案→)C. there is

D. it has

解析：There be句型表示“某地(或某时)存在有某人(或某物)，而并非某地(某人、某物或某时)拥有什么东西”，句中有若干个名词作主语，动词be常与后面主语中的第一个名词在数上一致。have一般表示某人有某物。句意：在我的铅笔盒里面，有一支钢笔，两支铅笔和三把尺子。a pen是单数名词，故选C。