All the guests at the party were dancing and singing happily _____ the electricity was cut off.
#30392
A
until
B
while
C
when
D
because
推荐题目
Schools in the cities are well equipped those in the countryside are poor．
#30153
A
if
B
while
C
so
D
as
His shop was so well managed that he sold in just 5 months ________ his competitor sold in a year.
#30332
A
how
B
what
C
whether
D
why
How can you expect him to make any improvement ________ you never give him an opportunity to have a try?
#31115
A
unless
B
when
C
until
D
while