Your speech was appropriate to the

Your speech was appropriate to the occasion.
I was at a loss what to do on that occasion.
My umbrella will serve for a weapon, should the occasion arise.
On this occasion, we should drink a toast.
Please allow me to say a few words on this occasion.
There is a severe shortage of water in this city, so we must give up having a bath occasionally.
This is a good occasion to know one another.
Don't be noisy on such an occasion.
The occasion demands a cool head.