问题
                    
You haven’t done it well.— But I tried my best and did it _____ a way ____ I think is the best.
                            A:in; /
B:/; in which
C:by; in that
D:in; which;
                        
                        B:/; in which
C:by; in that
D:in; which;
正确答案是:
                         
                        
                        
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