问题补充：
The two men walked the forest and got to a small house.
A. across
B. through
C. crossing
D. over
答案：
A. across
(答案→)B. through
C. crossing
D. over
解析：句意：那两个人穿过森林，到达了小屋。A穿过，指在物体的表面穿过，例如across road; through穿过，指从物体的里面通过，例如森林，窗户等；crossing十字路口；over在上面；故选B。
