The earth will become worse and worse ________ we do something to stop her from being polluted.
#55977
A
if
B
even if
C
when
D
unless
推荐题目
—You look tired. What’s wrong with you, Wang Ming?—Last night I watched TV 12 o’clock.
#55363
A
when
B
until
C
as
D
while
---Did you return Helen’s call? ---I didn’t need to _________I’ll see her tomorrow．
#57308
A
though
B
unless
C
when
D
because
How do you like your school?
#55853
A
What do you think your school?
B
How do you think of your school?
C
What do you think of your school?
D
How do you find your school?
There’re too many clothes in the shop. I really can’t decide .
#57190
A
which to buy coat
B
to buy which coat
C
which coat should I buy
D
which coat to buy