问题
                    
Try to buy one before all the tickets _______.
                            A:I’ve got a headache
B:She’ll take some medicine.
C:She’s got a headache
D:Thank you.;
                        
                        B:She’ll take some medicine.
C:She’s got a headache
D:Thank you.;
正确答案是:
                         
                        
                        
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