完成句子

①你们班有多少学生？

____ ____ students are there in your class?

② 这是一张中国地图。

This is a ____ ____China.

③ 操场在体育馆的左侧。

 The playground is ____ the ____ of the sports hall.

④老师的书桌上有一些书.

There are some books ____ the ____ desk.

⑤他们16岁毕业。

They leave school when they are 16____ ____.