The man was concentrating his entire attention on the men below him.

That is the area on which we should now concentrate our attention.

It is on them that I am going to concentrate my attention.

The student had to concentrate his full attention on the target.

Being able to concentrate and pay close attention to detail is important.

He could now completely concentrate his attention on what lay before him.

This will concentrate the British forces' attention on the sea.

He is definitely the one on whom to concentrate attention.

I closed mine and tried to concentrate my attention on the way ahead of us.

Like all the others around him, he concentrated his attention on the dancers.