问题
选择题
________ in the mountains for a week, the two students were finally saved by the local police
A．Having lost
B．Lost
C．Being lost
D．Losing
答案
答案：B
检查考生对非谓语动词的掌握和运用能力。首先，表示“失踪”用be lost；其次，语境中for a week，表示完成概念，所以用过去分词。