______, so he stopped the car at once.
#96919
A
Seeing a boy lying on the road
B
On seeing a boy sitting on the road
C
The driver had seen a boy standing on the road
D
The minute the driver saw a boy seated on the road
推荐题目
Cleaning women in big cities get _____ by the hour. 
#93573
A
pay
B
paying
C
paid
D
to pay
 He found his son _______ inside the lift, _______ very worried.    
#91740
A
trapping; felt
B
trapped; felt
C
trapped; feeling
D
trapping; feeling
He reached the station _____ only _____ that the train had just left. 
#98773
A
tired;learned
B
tiring;learning
C
to tire;to learn
D
tired;to learn