题目内容：

this is a (k )to the door 开头为 Kis this your (s )ID card?no it isn't.开头S
how do you spell your name?
J E N N Y.( ).is this your ruler?
yes,it is.
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优质解答

1.key 钥匙
2.student ID Card 学生证
3.By the way 顺便问一下