His words conveyed a keen feeling.

He answered my questions very kindly.

I am grateful for his kind help.

It's difficult to understand this paradox.

This word consists of five syllables.

We are mindful of saving electricity for the sake of the Earth.

We are mindful to save electricity for the sake of the Earth.

He emphasized the importance of the problem.

He emphasized the importance of the problem.

The first snow on the mountain is very beautiful.