Hearing a scream, I rushed downstairs, only    the hostess lying unconscious on the floor.
#93890
A
seeing
B
having seen
C
seen
D
to see
推荐题目
We should prevent such a silly mistake _____ again.
#98848
A
occurring
B
to occur
C
to be occurred
D
from being occurred
_____ in 2011, the Beijing-Shanghai high-speed railway has benefited Qufu a lot.
#88693
A
To complete
B
Completing
C
Having completed
D
Completed