问题
                    
____ do you study for a math test? —I study math ____ lots of exercises.
                            A:What, by doing
B:How, by doing
C:How, doing
D:What, doing
                        
                        B:How, by doing
C:How, doing
D:What, doing
正确答案是:
                         
                        
                        
                    同类题型
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