The monkey suddenly emerged the tree frightening Lucy into screaming.A. fromB. behindC.

问题补充：

The monkey suddenly emerged the tree, frightening Lucy into screaming.

A. from

B. behind

C. from behind

D. on

答案：

A. from

B. behind

(答案→)C. from behind

D. on

解析：本题考查介词。句意：猴子突然从树后出现,露茜吓得尖叫起来。emerge from从......出现。