While i was standing _____ the window,i saw several boys running ____ the street

问题描述:

While i was standing _____ the window,i saw several boys running ____ the street
A.at;along B.on;at C.in;on D.to;in 选哪一个?为什么?

at window 习惯用语啦 可以背下
on/in the street应该是汽车才这样,人还是沿着along比较合理