You needn’t take your shoes off when you enter someone’s house in Australia , _____ , of course , they’re very dirty .
#34326
A
before
B
since
C
when
D
unless
推荐题目
I noticed the puzzled look on his face, I realized that he didn’t understand me.
#32300
A
Although
B
When
C
Unless
D
Until
The question_______ you should take this medicine should be decided by your family doctor.
#31612
A
why
B
whether
C
if
D
that
——Did you stay up very late last night?——No，It was not 10 o’clock yet ____I went to bed.
#30760
A
when
B
until
C
that
D
while
is more important is as the earth cooled down, water began to appear on its surface.
#30116
A
What /that
B
That/what
C
What / what
D
That / that