国京证券开户:高一英语题

来源:百度文库 编辑:杭州交通信息网 时间:2024/06/02 05:37:57
Shirley sent him ___ to expain the reason why she couldn't go to his birthday party.

letter after letter 还是 letters after letters 还是别的?

letter after letter

letter after letter 不加s