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 ___ years ago, the population of China was over 20 million.
#51584
A
Four hundreds
B
Four hundred
C
Four hundred of
D
Four hundreds of
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After the earthquake,        soldiers went to Sichuan to help the people there.
#51492
A
two thousands
B
thousand of
C
thousands of
D
thousands
 -A ruler is 2 dollars and a pen is 5 dollars. How much are they? -They are               
#51155
A
$22
B
$3
C
$7
D
$5
There are four ______ students in my school.
#51817
A
hundred
B
hundreds
C
hundreds of
D
hundred of
On National Day there are more than four     people in the park.
#51600
A
thousand
B
thousands
C
thousands of
D
thousand of
My bedroom is about __________ of the size of yours.
#51725
A
two-three
B
two-threes
C
second-three
D
two-thirds