尋找適合你的 英語 教師……
Vocabulary based on this video: https://www.youtube.com/watch?v=5EsICTVo2dM&ab_channel=TED-Ed
測試題目 1 共 9 項
What does 'mainstay' mean?
A temporary or unimportant part of something.
A thing that is the most important or fundamental part of something.