still作副词修饰什么

请教老师，这个句子里的still是修饰形容词only么，还是修饰什么？

However,progress remains painfully slow and there were still only 18posts filled by women out of a total of 354 non-executive positions surveyed.

still（仍然）是修饰动词的。I still like you. I still live in China. I am still astudent.  still一般作中位状语，坐落于实意动词前，操作词后。你的句子中were是个操作词，所以still坐落于were之后。