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
The building ______ next year will be a restaurant．
#97293
A
having been built
B
to be built
C
being built
D
built
The young writer’s first book ______next month is based on a real person and event.
#94339
A
published
B
publishing
C
to be published
D
to publish
_______ yourself with those homeless children, you’ll find you are fortunate and happy.
#91737
A
Compare
B
To compare
C
Compared
D
Comparing
Standing on the bank, the children watched the ship ______ with all kinds of goods.
#97939
A
loading
B
being loaded
C
to be loaded
D
having loaded
---Can I smoke here ? ----Sorry, we don’t allow people _________ here.
#92299
A
smoking
B
smoke
C
to smoke
D
smoked