He was just falling asleep _____ there was a loud knock on the door.
#56552
A
while
B
when
C
then
D
until
推荐题目
It ____ yesterday.
#58428
A
took me two hours to finish the job.
B
spent me two hours to finish the job
C
took two hours me to finish the job
D
took me two hours finishing the job
We can talk with friends on the Internet _______ it’s easier and cheaper.
#58260
A
though
B
as
C
or
D
but
—All the isatis root（板蓝根） is sold out!—People are crazy! experts say there is no use eating isatis root to preventH7N9, some people still don’t believe it.
#56593
A
Although
B
Unless
C
As a result
D
In order that