The new machine, if     properly, will work for at least ten years.
#80823
A
used
B
use
C
using
D
being used
推荐题目
The computer was used in teaching. As a result, not only_________, but students became more interested in the lessons. 
#79641
A
saved was teachers’ energy
B
teachers’ energy was saved
C
was teachers’ energy saved
D
was saved teachers’ energy
The lawyer seldom wears anything other than a suit __________the season.
#84385
A
whatever
B
wherever
C
whenever
D
however
_______ for the doctor’s careful treatment, he _______ till last year.
#79622
A
If it is not; can’t live
B
Were it not; couldn’t live
C
Had it not been; couldn’t have lived
D
If it were not; wouldn’t live
It rained heavily overnight and not until this morning____.
#82164
A
did it stop
B
had it stopped
C
stopped
D
it stopped