宾语从句问题(I think后面接不定式作主语)

请问老师，宾语从句后面从句内容可以不定式做主语吗？

I think to do some exercise everyday is better to us.

感觉 to...容易和think搭配，导致混淆，算是有语法错误吗？

I think to do some exercise everyday is better to us.

这句话，在口语中可以说，但在书面语应防止。建议改为：

I think （that）it is better for us to do some exercise everyday.

I think （that doing some exercise everyday is better for us.

I think that to do some exercise everyday is better for us.