问题
选择题
—I haven't got a mobile phone. 
—I think you should have . It's useful for you.
A．one
B．this
C．that
D．it
答案
答案：A
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—I haven't got a mobile phone.
—I think you should have . It's useful for you.
A．one
B．this
C．that
D．it
答案：A