She cannot understand why he should turn on her so suddenly.

She didn't understand what made him suddenly turn on her.

He just suddenly turned his head and looked full at me.

As she looked at him, he suddenly turned and held out his hand to her.

Several times he turned suddenly, thinking someone was behind him, only to find himself alone.

She turned suddenly and looked him full in the face.

I turned to him quite suddenly with a new question.

He turned suddenly to see a man coming from behind him.

How could she be cold when her body had so suddenly turned to fire?

One of them suddenly turned and looked straight at her.