I am a happy to see such a sweet sentence you have written.

I am a happy to see such a sweet sentence you have written.
I am a happy to see such a sweet sentence you have written.

I am a happy to see such a sweet sentence you have written.
我很高兴看到你写了这么美妙的一个句子.

我是高兴地看到你有写这样一个可爱的句子

看到你写了这么一个甜美的句子我感到很高兴， happy前面的a是没有的， 您打错了吧？