A-A+ 13 1=formal 2=informal 答案填写数字1或2 Greetings like Hi or Hey are often used in ________ letters. 2024-04-28 20:02:27 网课题库 阅读 次 问题详情 13、1=formal 2=informal 答案填写数字1或2 Greetings like Hi or Hey are often used in ________ letters. 参考答案 10