Definition: to offer to do something without being asked or told to do it Level: C1
上周，罗布主动提出组织团建活动。
Last week, Rob ___volunteered to organize the team-building event.
她主动提出带我们参观新图书馆。
She ___volunteered to give us a tour of the new library.
尽管日程繁忙，他仍主动提出指导新员工。
Despite his busy schedule, he ___volunteered to mentor new employees.
