"I have been waiting a long time to offer my congratulations."
I would like to offer him my congratulations at this point.
"I called this evening especially to offer you my congratulations."
At this point, therefore, I would like above all to offer congratulations and thanks.
I would like to offer you all my warm congratulations on your election last month.
Let me be the first tonight to offer my sincere congratulations.
"Allow me to offer my congratulations," the older of the two said after a few seconds.
It is a great achievement and we would like to offer our congratulations to all involved.
I am sure that the Presidency and all of us offer our congratulations.
"He asked me to offer congratulations to you on the level of your skill, Professor."