volunteer|volunteered|volunteers|volunteering

他主动提出照看孩子们。

He ___volunteered to look after the children.

玛丽亚主动提出介绍暑期课程。

Maria ___volunteered to talk about the summer courses.

无需他人催促，几名员工主动提出周末加班。

Without being prompted, several staff members ___volunteered to work over the weekend.

我的朋友是一名红十字会的志愿者。

My friend is a Red Cross ___volunteer.

慈善机构常常依靠志愿者来进行日常运营。

Charities often rely on ___volunteers for daily operations.

我和红十字会的志愿者一起参加了活动，因为我自己也是其中一员。

I attended the event with Red Cross ___volunteers, as I am one myself.

过去一年里，她每个星期六都在动物收容所当志愿者。

She has been ___volunteering at the animal shelter every Saturday for the past year.