_____ a lot of small ads are put up on the walls, out city will be untidy.
#55173
A
Until
B
Though
C
If
D
Unless
推荐题目
the great teacher Zhang Lili was in hospital, many people hoped she would get better soon.
#56986
A
If
B
Until
C
Before
D
After
You’d better look up the new word in a dictionary____ you don’t know it.
#55486
A
if
B
as
C
though
D
whether