---What are you reading? --- The Old Man and the Sea      Hemingway.
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A
in
B
for
C
of
D
by
推荐题目
---________do you spend _English learning every day? ---For about an hour.
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A
How long, in
B
How many times, on
C
How often, on
D
How long, on
Can you provide us _________ some information _______ the computer? 
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for, about
B
with, about
C
about, with
D
with, with
 They can buy the pens _____ a very good _____.
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A
at, price
B
in, price
C
at, cost
D
at, selling