Looking up I saw that some children rags were looking at me silently as I ate.A. byB. in

问题补充：

Looking up, I saw that some children rags were looking at me silently as I ate.

A. by

B. in

C. with

D. on

答案：

A. by

(答案→)B. in

C. with

D. on

解析：固定结构。In rags衣衫褴褛。