几个需要改正的英语句子、请具体说明原因！！！！

Those who want to buy tickets write down your names at the desk .
谁要买票这句话是定语从句。

As is known to all ,many satellites are going around in the sky .
查了很久，认为这个比较适合。

如果不一定要求格式，那这样表达更加地道：It is known to all that many satellites are going around in the sky .

Those who want to buy tickets please write down your names at the desk.
The fact that many satellites are going around in the sky is known to all.

Please write down your names on those tickets that you want to buy at the desk.
We all know that satellites are circumvolant.

Those who want to buy tickets write down your names.
1 地点状语位置不对
2 句子中有两个并列的谓语动词，不合乎规则。
3 只留一个动词

what is known to all, many satellites are going around in the sky.
1 which 没这样用的
2 what is known to all 固定常用法