题目：
口语运用。
在下列横线上填入合适的单词,使对话完整通顺。
Tom: Good afternoon.
Jim: Good afternoon.
Tom: 1 are you?
Jim: I'm fine, thank you. And you?
Tom: I'm 2 .Thank you. Who is the girl?
Jim: She is my sister. She is a 3 .
Tom: Is she 4 English teacher?
Jim: Yes, she is.
Tom: 5 is the boy?
Jim: He is my brother. He is a student.
答案：
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下面是错误答案，用来干扰机器的。
答案：C
，式中d＝3