The city park will be cleaner ___________ people stop dropping litter here and there.
#56719
A
while
B
if
C
unless
D
before
推荐题目
—How about joining us in the summer camp? —I wish I could, ___________ I have to practice for the piano test.
#56543
A
because
B
so
C
but
D
although
—Is there a park near here? —No, there isn’t. _____there is a post office.
#57349
A
And
B
But
C
So
D
When
—Could you tell me _______, Mary? —Of course. Go straight, and you’ll see it on your right.
#55393
A
where is the cinema
B
where the cinema is
C
where was the cinema
D
where the cinema was
