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.