—— Hurry up. The bus is coming! —— Oh, no, we mustn’t cross the street ______ the traffic lights are green.
#55778
A
after
B
since
C
when
D
until
推荐题目
--Every day, my mother tries to spare some time to chat with me ______ she is very tired after a whole day’s hard work. --How kind she is!
#58523
A
and
B
so
C
although
D
but
She won’t lose weight______ she keeps a diet and takes exercise every day.
#55813
A
unless
B
if
C
because
D
since
---_______do you send e-mails to your pen friend? ------Once a month.
#56239
A
How long
B
How far
C
How much
D
How often
______ the work is difficult, all the workers are keeping on working .
#58370
A
But
B
Although
C
And
D
So