I had to report the accident length as the reporter asked me to describe it detail. A. i

I had to report the accident length as the reporter asked me to describe it detail.
A. in, in
B. at, in
C. at, at
D. in, at

A. in, in(答案→)B. at, inC. at, atD. in, at解析：at length =in detail 详细地

我好好复习下