巩固bet
best friend还有什么表达，通过拓展片段找出来
best friend, bosom friend, bestie【😍这个】
Rumor has it
S和B的关系有些变化
that S. And B. changed their relationship status
从姐妹淘变成了室友
from besties to roomies.
🤗I bet. 地道用法