This machine is very easy______. Anybody can learn to use it in a few minutes. 
#90027
A
operating
B
to be operating
C
operated
D
to operate
推荐题目
 — What do you think made Mary so upset?—  __________ her new bicycle.
#95510
A
As she lost
B
She lost
C
Losing
D
Because of losing
_______ out from his company, he had to find a new job.
#97486
A
Be kicked
B
Kick
C
Kicked
D
Having kicked
A beach house caught fire last night, ______seven students living in it.
#98953
A
to kill
B
killing
C
having killed
D
killed