语法词汇练习 语法大全 语法详解 英语听力 
He was just falling asleep _____ there was a loud knock on the door.
#56552
A
while
B
when
C
then
D
until
下一题
推荐题目
He watches TV twice ____ three times a day.
#58143
A
and
B
or
C
from
D
to
At school, some students are active ______ some are shy, yet they can be good friends with one another.
#55459
A
while
B
although
C
so
D
as
The boy can speak English well, _____he’s only ____eight-year-old boy.
#56903
A
and, an
B
or, a
C
although, an
D
because, a
You will fall behind others_______ you work hard.
#56590
A
if
B
unless
C
though
D
since
Millie’s father was sleeping        he was watching TV.
#56863
A
as
B
when
C
while
D
after