Once in the forest, you ought to remain you are waiting for help．
A. being lost; where
B. losing; where
C. lost; there
D. lost; where
网友回答
A. being lost; where
B. losing; where
C. lost; there
(答案→)D. lost; where
解析：这题考查状语从句的省略式，once lost=once you are lost，第二空考查表语从句，remain是连系动词，后面接表语从句，表语从句中缺地点状语。选D.句意是：一旦你在树林里迷路了，你应该呆在原来的地方等着帮助。