—There is a tiny windowthe wall of the room and I saw something strangeit—Really? Why so

问题补充：

—There is a tiny windowthe wall of the room and I saw something strangeit．

—Really? Why so strange?

A. in，through

B. on，across

C. in，across

D. on，through

答案：

(答案→)A. in，through

B. on，across

C. in，across

D. on，through

解析：A 考查介词。窗户是在墙里面，故用in，从窗户往外看，从内部穿过用through。