修改如下：
I don't know how big Beijing is.
Beijing has got lots of animals.
My hometown is Beijing.


保证准确率~



为什么，请讲讲知识！

好的

1. I don't know 是主句，后面从句为陈述语序，即 连接词how+主语Beijing+谓语is

2. is, got 同为动词，一个句子一般不出现两动词，所以把is换成has, has got = has

3. 我的家乡是北京My hometown is Beijing.   Beijing做表语，不用加in the

那如果是My hometown in Beijing呢，有没有错？有错噢少谓语，不用in应该是 My hometown is Beijing.