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 won’t pass the oral English test ______ you practise speaking more．—I am sure that I will be the best．Don’t worry，mum．
#58398
A
when
B
if
C
unless
D
after
My English teacher is busy, __________ she always finds time to visit her parents.
#57588
A
and
B
so
C
but
D
or
It was raining heavily, _____ we decided to stay at home and watch TV.
#55325
A
but
B
or
C
because
D
so
The young girl couldn't afford a new car. ______, she bought a used one.
#56630
A
Besides
B
Otherwise
C
Since
D
Instead