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24．―I'm going to Chengde for the holiday．― A．Good―bye! B．Be careful! C．You're welcome． D．Have a good time ! 【查看更多】

 

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—I'm going to Chengde for the holiday．

—          

A．Good—bye!                                     B．Be careful!

C．You're welcome．                               D．Have a good time!

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