--Hurry up! The bus is coming.--Wait a minute. Don’t cross the street       the traffic lights are green.
#56768
A
until
B
after
C
while
D
since
推荐题目
 He was so tired that he fell asleep ___he went to bed.
#58470
A
as if
B
even though
C
ever since
D
as soon as
There are so many kinds of radios in the shop. I can’t decide _________.
#56296
A
to buy what
B
to buy which
C
which to buy
D
when to buy
When we write our homework on the computer, we should  _____ first.
#55940
A
save the document
B
print our homework
C
open a new document
D
turn off the computer