This machine is very easy      . Anybody can learn to use it in a few minutes.
#94917
A
operating
B
to be operating
C
operated
D
to operate
推荐题目
    to sunlight for too much time will do harm to your skin.
#89429
A
Exposed
B
Having exposed
C
Being exposed
D
After being exposed
Please tell me the way you thought of _______ the garden.
#96657
A
take care of
B
to take care of
C
taking care of
D
to take care