I have two grammars, ______are of great use. 
#73806
A
all of which
B
either of which
C
both of that
D
both of which
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We felt amazed at the use  the waste bottles.
#71625
A
they had made
B
they had made of
C
they had put
D
they had put to
 — If our government _____attention to controling food safety now, our health _____in danger.
#41267
A
won’t pay, is
B
doesn’t pay, is
C
won’t pay, will be
D
doesn’t pay, will be