I would like to congratulate everybody on the hard work they put in.

I would also like to congratulate the President on her election.

I should like to congratulate the Director and the staff on their work.

I would like to congratulate him on a fine report.

We know what important work they are doing, and I would like to congratulate them.

I would also like to congratulate him because it is his first day in office.

I would like to congratulate the committee on its work.

I would like to congratulate him on the quality of the work he has done.

I should like to congratulate everyone who has worked on them.

I would like to congratulate the people who have taken part in the work leading to the paper today.