—What is on the desk?—There a book and two pens on it. A. haveB. hasC. isD. are

问题补充：

—What is on the desk?

—There a book and two pens on it.

A. have

B. has

C. is

D. are

答案：

A. have

B. has

(答案→)C. is

D. are

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。根据第一个主语a book，可知谓语动词用单数，选C。