1. 选择正确的选项完成句子。

A. How long    B. How big    C. Where    D. Can    E. Is

1. （1） —it in your country? 

   — Yes, it is.

3. （2） —is the Yellow River?

   — It is in the north of China.

5. （3） —is Beijing? 

   — It's got more than twenty million people.

7. （4） —you swim in the river? 

   — No, I can't.

9. （5） —is that big river? 

   — It is about ten thousand kilometres.