___________ the three questions, which one is the most difficult to answer?
#47556
A
As
B
In
C
Than
D
Of
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_________ March 28, about 20 Chinese cities turned off lights of major buildings for one hour.
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A
At
B
In
C
On
D
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_______ of fans have voted online ________ their favourite singers.
#49242
A
Thousand, for
B
Thousand, to
C
Thousands, to
D
Thousands, for
A：Where is my baseball?B：It’s the table, the floor.
#49388
A
on, under
B
under, on
C
under,under
D
to, on