( )1. ________ the big snake，the little girl stood under the tree ________ out of her life.
A．Seeing; frightened B．Seeing; frightening
C．Seen; frightened D．To see; frightening
( )2. Henry always forgets things he has done. Yesterday he forgot ________and looked for it everywhere.
A．to post the letter
B．to have the letter posted
C．to have posted the letter
D．having posted the letter
