During the holiday, ____ people went to travel.
#51548
A
million of
B
two millions
C
millions of
D
million
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Tree Planting Day is on ______ of March. 
#51094
A
twelve
B
the twelve
C
twelfth
D
the twelfth
This is       river. Few of us can swim       it, I think.
#51656
A
a 800-foot-wide; over
B
an 800-foot-wide; across
C
a 800-feet-wide; over
D
an 800-feet-wide; across
Quzhou is a wonderful place,      visitors come here every year.
#51828
A
two millions
B
million of
C
millions of
D
two million of
They have made so great progress      .
#51890
A
three years ago
B
for three years
C
in the past three years
D
before three years