Someone knocked at the door       he was doing his homework.
#55271
A
after
B
when
C
until
D
as soon as
推荐题目
Jim is very popular in our class because he is _________clever ____________helpful.
#58241
A
not only; but also
B
either; or
C
neither; nor
D
too; to
English is easy        my son.
#56894
A
and
B
but
C
for
D
in
Simon improved his way of study. ________, he has made great progress.
#58006
A
As a result
B
As usual
C
In other words
D
In all
______ would you like to live in? 
#55518
A
where
B
which city
C
which
D
When