如何使用?
下列那一個正確, 請解釋~thx!!
a. the old people often help each other.
b. the old people often help one another.
收錄日期: 2021-04-11 17:06:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090518000051KK01631