They didn't go to bed_____ the work was finished.
#57763
A
when
B
while
C
until
D
after
推荐题目
 —Look out! Don’t run the red light when crossing the road next time.—_______________. 
#55480
A
You’d better not.
B
Yes, I’d love to.
C
Sorry, I won’t.
D
OK. I will.
If the question ______ incorrectly, _______ question will be given to you
#57305
A
is answered, other
B
answers, other
C
is answered, another
D
answers, another
________ I got on the bus, he got off.
#55991
A
As
B
While
C
Until
D
Till