people came to the Great Wall during May Day Holiday.  
#51416
A
Million
B
Millions of
C
Million of
D
Ten millions
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110,206 should be read __________. 
#51769
A
one hundred and ten thousand, two hundred and six
B
one hundred and ten thousands and two hundreds and six
C
one hundred and ten thousand and two hundred and six
D
one hundred, ten thousand, two hundred and six
__________ trees are yellow in autumn.               
#51910
A
The number
B
A number
C
A number of
D
The number of
"We will learn        English words this year," the teacher said to the students.
#51555
A
one thousand, three hundred and twenty-one
B
a thousand, and three hundred twenty-one
C
one thousand, three hundred twenty-one
D
a thousand, three hundred and twenty-one
The Sutong Highway Bridge, a__________ bridge, is open to traffic.
#51790
A
320 metre long
B
320-metre-long
C
320 metres long
D
320-metres-long