You shouldn’t have the machines ______ all the while. You ought to have them ______ now and then.
#97579
A
run; repair
B
running; repairing
C
run; repaired
D
running; repaired
推荐题目
Having arrived at the station, _____.
#98250
A
it was found that the train had left
B
the train had left
C
the train was found left
D
he found that the train had left
The heavy snow lasted for a week, _____ a serious traffic confusion in the whole area.
#94158
A
causing
B
caused
C
having caused
D
being caused
Thank you very much for the trouble you have taken _________ me with my English.
#97390
A
helping
B
to help
C
help
D
helped
—I would like to buy an expensive camera.—Well.We have several models________.
#88718
A
to choose from
B
of choice
C
to be chosen
D
for choosing