你要为杰克的离别礼物捐款吗？

Are you going to ___contribute towards Jack's leaving present?

她的家人向基金捐赠了50,000英镑。

Her family have ___contributed £50,000 to the fund.

如果你觉得有东西可以贡献，请务必来参加会议。

Do come to the meeting if you feel you have something to ___contribute.