读句子，排序，组成一段完整的对话。
Yes,
No , it isn’t.
It is a bell .
Excuse me , Miss Lu .
What is this ?
Is this a bell , too ?
读句子，排序，组成一段完整的对话。
Yes,
No , it isn’t.
It is a bell .
Excuse me , Miss Lu .
What is this ?
Is this a bell , too ?
试题篮
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