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                题目内容
                (广东开放大学-大学英语2)
            
            
                Travelling was not as easy as it is today. It wasn’t so easy ____ in those days.
A.in travelling
B.for travelling
C.to travel
D.in order to travel
                    
                    
                    
                
                
                
            
        A.in travelling
B.for travelling
C.to travel
D.in order to travel
参考答案