For many online shops, the price of their products can be decreased _______ 30% in the holiday seasons.
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A
to
B
of
C
by
D
on
推荐题目
Lincoln died ____ the morning ___ April 15, 1865.
#28878
A
in…on
B
on….in
C
in…..in
D
on….on
 Bob: How long have you lived here?    Sue: _________.
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A
Since the beginning of the year.
B
In 1990
C
Not long ago
D
Only until the end of the year
Many chemical substances react________oxygen. 
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A
on
B
with
C
against
D
to