问题描述：
补全对话:A:Where are you going?B:I'm () to buy some CDs.A:What ()() nusi
补全对话:
A:Where are you going?
B:I’m () to buy some CDs.
A:What ()() nusic do you like?
B:I like pop music.()() you?
A:I() country music to pop music.
B:Where’s the musicon?
A:It’s() the second floor .What are you()()do then?
B:I’m going to the library.
补全对话:
A:Where are you going?
B:I’m () to buy some CDs.
A:What ()() nusic do you like?
B:I like pop music.()() you?
A:I() country music to pop music.
B:Where’s the musicon?
A:It’s() the second floor .What are you()()do then?
B:I’m going to the library.
问题解答：
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