读一读，补全对话
A: Hello, Mike!
B:
A: Where's my pen?
B:
A : No, it isn't.
B: Is it in your hand?
A: 
读一读，补全对话
A: Hello, Mike!
B:
A: Where's my pen?
B:
A : No, it isn't.
B: Is it in your hand?
A:
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