Keep off the drugs（毒品）, you and your family will be in great danger?
#58326
A
and
B
or
C
but
D
so
推荐题目
In this world there is no shortcut to take. So people, no matter how clever they are, can’t succeed_______ they work hard.
#57343
A
if
B
even though
C
unless
D
but
Bill won’t make any progress ______ he studies harder than before .
#57126
A
if
B
when
C
because
D
unless
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