You have to take some necessities such as ropes, a flash, boots, you may get lost in the mountain if going hiking.
A. so that
B. in order that
C. now that
D. in case
网友回答
A. so that
B. in order that
C. now that
(答案→)D. in case
解析：句意：如果你去徒步旅行，你不得不带着一些必要的东西例如绳子，手电和靴子，以防万一你在山里迷路了。so that以便；in order that为了；now that既然；in case以防万一。根据句意故选D。