问题
选择题
The Great Wall is one of the greatest wonders in the world, ______ people visited it every year.[ ]
A. the number of
B. a number of
C. all the number of
答案
答案：B
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The Great Wall is one of the greatest wonders in the world, ______ people visited it every year.[ ]
A. the number of
B. a number of
C. all the number of
答案：B
