马航官网订票流程:"曾做过义工"英语怎么说?
来源:百度文库 编辑:高校问答 时间:2024/05/14 03:36:15
used to be a volunteer
I was a volunteer (for XXX service).
use to be a volunteer
once to be a volunteer
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来源:百度文库 编辑:高校问答 时间:2024/05/14 03:36:15
used to be a volunteer
I was a volunteer (for XXX service).
use to be a volunteer
once to be a volunteer