With the computer's system _______. it can't be used at the moment.
#90599
A
updating
B
being updated
C
updated
D
to update
推荐题目
 ______ is a good form of exercise for both the old and the young.
#88215
A
Walk
B
To walk
C
Walking
D
The walk
He was disappointed to find his suggestions ____.
#97317
A
been turned down
B
turned down
C
to be turned down
D
to turn down
Once ______ by the expert, the girl will improve her English in a few months.
#94493
A
being taught
B
to be taught
C
taught
D
teaching