问题描述：
20.英语单项选择
--- ________ ,is this your key?---Yes,it is.Thank you.
A.Hello B.Hi C.Excuse me D.Sorry
--- ________ ,is this your key?---Yes,it is.Thank you.
A.Hello B.Hi C.Excuse me D.Sorry
问题解答：
我来补答展开全文阅读