Noticing a boy fall off his bicycle Mike ran over ______ if he was hurt. 
#90352
A
seeing
B
to see
C
saw
D
seen
推荐题目
This afternoon Mr Smith will give us a report on nuclear energy , which is well worth _____.
#96049
A
listening
B
listening to
C
being listened
D
being listened to
Little Tom admitted _____ in the examination, _____ that he wouldn’t do that in future.
#92604
A
to cheat; to promise
B
cheating; promise
C
having cheated; promising
D
to have cheated; promised
He was busy writing a story , only _______ once in a while to smoke a cigarette.
#94052
A
to stop
B
stopping
C
to have stopped
D
having stopped