Do you know on which _______ to go down if there is a fire?A.ladder B.stair C.hose D.reel
问题描述：
Do you know on which _______ to go down if there is a fire?A.ladder B.stair C.hose D.reel
Do you know on which _______ to go down if there is a fire?
A.ladder B.stair C.hose D.reel
并翻译
答
B,stair楼梯,A,*应该climb down,CD意思不对