Definition: Voluntary work is done without being paid and usually involves helping people. Level: C1
她为无国界医生做志愿工作。
She does ___voluntary work for Doctors Without Borders.
许多人支持志愿组织。
Many people support ___voluntary organizations.
1998年我在英国做了一整年的志愿工作。
I did ___voluntary work for a whole year in 1998 in Britain.
