各位先進您好
下面兩題是關係子句的答案
但是題目讓我有點矇
想請教一下
依照關係代名詞的文法定義
先行詞+關代(主格)+動詞
但下列兩個題目請問差異
1. One of the waitresses who _work_ in the cafeteria is a member of the band.
2. Linda is the only one of the girls that _is_ doing homework now.
依照文法規則,第一題的先行詞是waitresses,所以work呈原型狀態
但是第二題的先行詞也是複數型girls,為何是單數be動詞is?
感謝大神協助