______ 6 world powers have accepted ______ Iranian offer for talks on its disputed nuclear program.
#11685
A
The; a
B
不填; an
C
The; an
D
不填; a
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The new stadium being built for the next Asian Games will be ______ the present one.
#14116
A
as three times big as
B
three times as big as
C
as big as three times
D
as big three times as
There has been ____ accidents on this part of road. 
#14351
A
a number of
B
a great deal of
C
a series of
D
plenty of