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
____________the trousers? They’re very nice. They feel soft and smooth.
#55898
A
What do you think of
B
What do you like
C
How do you do
D
How would you like
I arrived at the airport ________ the plane had taken off.
#57885
A
after
B
while
C
when
D
before
— We can use QQ to talk with each other online.— Really? Could you please show me _______ it?
#55975
A
what to do
B
how to do
C
when to do
D
why to do
--There             so many foreigners in the streets these days.-- They might be runners in the Yellow River Estuary (入海口，河口) International Marathon.
#56365
A
is
B
are
C
have
D
will be
Sometimes I feel bored and don’t  know ______ to do.                          
#55615
A
how
B
why
C
what
D
where