one of the rooms( was/ were) damaged in the fire.这里是用was 还是were?

was
其中一间屋子被毁了 所以用单数谢谢,我找到个这样的说法,不知道对不对:one of ...结构作主语，一般情况下，谓语动词都是用单数。 但是如果这个结构用作定语从句的先行词，从句谓语动词用复数。但如果前有the only,the very等修饰时，谓语动词用单数。如： He is the only one of the students who was praised at the meeting. “他是在会上唯一被表扬的学生。”你说的很对，就拿你那例句来说：如果没有only，就应该用were，因为此时定语从句的先行词是students,是复数He is one of the students who were praised at the meeting. 但如果有only，那就不一样了，这时整个定语从句的先行词变成了he了，说实话这个时候其实不是定语从句，而是一个同位语从句