问题补充：
Walk the bridge and then turn left the right at the first turning .
A. along, at
B. in, to
C. across, on
D. through , in
答案：
A. along, at
B. in, to
(答案→)C. across, on
D. through , in
解析：句意：走过这个桥，然后在第一个转弯处的右边左转。across意为“穿过”强调从物体的表明穿过，不能作为谓语动词，on the right在右边，固定搭配，故选C
