He seemed to be thinking deeply, working something out in his mind.

But I too have thought long and deeply on this subject.

The young man sat down on the edge of his bed, thinking deeply.

"We want to produce people who can think deeply on their own two feet."

For several minutes he sat in the chair she left, thinking deeply.

As you can tell, I have been thinking deeply about all this.

It seemed as if she thought deeply before words came out.

Peter sat on his bed for the next ten minutes and thought deeply.

I thought deeply and fought the idea which came to me.

So they and we need to think deeply about what is being revealed.