吉他手的手指在琴弦与品丝之间快速移动。

The guitarist's fingers moved quickly between the strings and the ___frets.

他总为考试成绩焦虑不安。

He always ___frets about his exam results.

多年的海水侵蚀使金属栏杆逐渐锈蚀。

The metal railing was ___fretted by years of saltwater exposure.