it's necessary for you to go to bed early at night

问题补充：

its necessary for you to go to bed early at night 同义句—— to bed early at night —— —— for you

答案：

填写：Going；is necessary

翻译：尽早上床对你来说你必要的

======以下答案可供参考======

供参考答案1:

前面是一个空还是俩空？

一个空的话就是 goingis necessary

供参考答案2:

Going, is necessary

供参考答案3:

Going to bed early at night is good for you.

动名词going做主语

be good for 对.....有好处

供参考答案4:

Going to bed early at night is necessary for you .