这些学生自愿用他们的空闲时间去帮助养老院的老人 These students______ _______ _______ their free time

问题描述:

这些学生自愿用他们的空闲时间去帮助养老院的老人 These students______ _______ _______ their free time

These students voluntarily to help the elderly nursing home in their free time