她感到紧张，因为这是她第一次在众人面前演讲。

She ___feels nervous because it's her first time speaking in front of a crowd.

这块石头摸起来很光滑。

This stone ___feels very smooth to the touch.

她感觉有点冷，于是披上了外套。

She ___feels a little cold, so she puts on her jacket.

我感觉他们隐瞒了重要信息。

I ___feel they're hiding something important.