______, 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
He was busy writing a story, only _____once in a while to smoke a cigarette.
#92270
A
to stop
B
stopping
C
to have stopped
D
having stopped
The man is hard __.
#93549
A
to get along
B
to be got along with
C
to get along with
D
getting along