He turned the question over in his own mind a couple of times first.

He seemed to turn this information over in his mind for a long moment.

She turned this idea over in her mind a good deal.

Let me tell you, I've been turning it in my mind.

Having turned the matter over in his mind for a while, he put it aside.

The Leader appeared to be turning this over in his mind.

She had been turning this issue over in her mind for some time.

I turned it over in my mind for a minute or more.

So she had turned it over in her mind for a moment, then nodded.

He turned it long in his mind and found little light.