—Do you know our school at all?—No this is the first time I here.A. wasB. have beenC. ca

问题补充：

—Do you know our school at all?

—No, this is the first time I here.

A. was

B. have been

C. came

D. am coming

答案：

A. was

(答案→)B. have been

C. came

D. am coming

解析：B 考察固定搭配。句意：—你了解我们学校吗？—不了解，这是我第一次来这儿。It is the first time + have done是固定句式，意为：某人第一次做…；故B正确。如果前面句中是was，后面要使用过去完成时。