Engines are to machines _________ hearts are to animals. 
#73870
A
as
B
that
C
what
D
which
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The camera is _______expensive________ I can't afford it. 
#67508
A
so, that
B
such, that
C
so, as to
D
enough, that
If our government _______ attention to controlling food safety now, our health _______ in danger.
#41026
A
wont’ pay; is
B
doesn’t pay; is
C
won’t pay; will be
D
doesn’t pay; will be
I study really hard ________ I can make my dream come true. 
#41057
A
to
B
in order to
C
so that
D
because