______ the blind wandering through the traffic, motorists would have to step on their brakes at once.
#90882
A
Seeing
B
Having seen
C
Seen
D
To have seen
推荐题目
The fire ______ at might was still seen ______ the next morning.
#96802
A
breaking out; burning
B
to break out; to burn
C
broke out; burnt
D
had broken out; burning
With difficult problems ___, the president feels relaxed now. 
#96323
A
settled
B
settling
C
to settle
D
being settled
Someone took away my umbrella, I’d never expect it _______.
#96387
A
returning
B
to be returned
C
return
D
to returning