Nothing can be done _______ he returns.
#56142
A
as
B
before
C
while
D
until
推荐题目
I got up late yesterday, ____ I had to take my breakfast with me on the bus.
#55242
A
and
B
but
C
or
D
so
----May I go swimming this afternoon? ----I'm afraid not _______ you have finished your homework.
#55714
A
unless
B
because
C
if
D
though
