问题补充:
the big snake, the little girl stood under the tree to death.
A. Seeing; frightened
B. Seeing; frightening
C. Seen; frighten
D. To see; frightening
答案:
(答案→)A. Seeing; frightened
B. Seeing; frightening
C. Seen; frighten
D. To see; frightening
解析:seeing the big snake在句中作时间状语;frightened to death在句中作伴随状语。