16-year-old students in England should understand fifteen _______ words.
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A
thousand
B
thousands
C
thousand of
D
thousands of
推荐题目
There are about ________ students in our school.
#51432
A
eight hundred
B
eight hundred of
C
eight hundreds
D
eight hundreds of
They go to the movies ________a month.
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A
three times or four times
B
three or four times
C
three and four times
D
three times and four times
 On National Day there are more than five __________ people in the zoo.
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A
thousand
B
thousands
C
thousands of
D
thousand of
Li ping’s brother is an            boy.
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A
eighteen-years-old
B
eighteen years old
C
eighteen-year-old
D
eighteen year old
Tibet has been a part of China since _________ years ago.
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A
hundred
B
seven hundreds
C
hundreds of
D
seven hundred of