I am truly very grateful for your help.

真的很感谢你们的帮助。

youdao

I'm flying back to China tonight. I'm very grateful to you for your help.

我今晚要飞回中国了。我非常感激你的帮助。

youdao

I'm very grateful (to you) for all your help.

非常感谢你的一切帮助。

youdao

I'm very grateful to you for all of your help.

我真的感激你所有的帮助。

youdao

I'm flying back to China tonight. I'm very grateful to you for your help.

我今晚就要飞回中国了，非常感谢你的帮助。

youdao

I'm very grateful to you for your help.

我非常感谢您的帮助。

youdao

I'm very grateful to you for your help.

我非常感谢您的帮助。

youdao