—I'll call you ______ I arrive in Shenzhen． —Thanks, and good luck．
#31894
A
while
B
until
C
as
D
once
推荐题目
One of the glorious moments in my school life was I was awarded the Mayor’s Award．
#32009
A
why
B
how
C
that
D
when
One advantage of owning your own car is you can go anywhere at any time you like．
#33141
A
when
B
why
C
what
D
that
cycling is a fantastic way to burn a few calories and save some money, there still exist risks．
#31065
A
Since
B
While
C
As
D
When
______ he has made a decision, it is not easy for you to make him change his mind.
#31776
A
Though
B
Unless
C
Until
D
Once