But she was having trouble keeping her mind on her work.

He kept his mind on his work with an effort.

They have been told to keep their attention on their work.

Various medical men were reading papers and she had to keep her mind on her work.

For another thing, he needed to keep his mind on his work.

"You have to keep some perspective on your work," said the 54-year-old director.

It had been terribly difficult to keep her mind on her work.

Michael found it difficult to keep his mind on his work.

Aggie told us Mark likes to keep quiet on his work.

Anyway, it was not easy to keep his mind on his work just now.