Good-bye, Ms. Lin! See you tomorrow.
林老師再見！明天見。
I said good-bye to my friends at the MRT station.
我在捷運站跟朋友說再見。
Good-bye, Grandma. I'll call you this weekend.
奶奶再見，我這週末會打電話給你。
The kids waved good-bye to their parents at the school gate.
孩子們在校門口跟爸媽揮手說再見。