make a contribution

Members of the Committee made significant contributions to low energy design in their own work.

For example, you may make several small contributions to a committee during a year.

She has been making contributions ever since, for about 40 years.

People were making contributions at the rate of one every second.

At any company, the time comes when some people need to move along, even if they've made strong contributions.

He also made contributions to the history of economic thought.

All of them have made great contributions to our success.

As from 1940, the College made its contribution to the war effort.

I'll make my contribution the way I did before, do you understand?

I hope everyone will want to make their personal contribution and use all available means.