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
No one can avoid         by advertisements. 
#90787
A
to be influenced
B
being influenced
C
influencing
D
having influence
________ by the policy, he decided to build a new factory.
#88289
A
Being encouraged
B
Encouraging
C
Encouraged
D
Having encouraged
___ in London, the penniless American wandered on the pavement, ___ to find a job to make a living.
#89277
A
Lost; hoped
B
Losing; hoped
C
Lost; hoping
D
Losing; hoping