striggling his way in the dark for a whole night,he finally

Struggling his way in the dark for a whole night,he finally found himself__in the forestA。lost B。having been lostB项错在哪having been lost一般只做状语的。而这里是宾补,所以,不用现在分词完成式的。过去分词宾补,表示被动完成。