题目内容：

The biggest city of a country is not certainly the capital of that country.Many people from other countries visit Great Wall in Beijing.There are many stars on the national flag of the USa.

优质解答

这第一句没人明显错误,只是最后两个词that country有点啰嗦,用it代替就行 第二句没什么错误 USA都要大写
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