To speak seems to be more difficult than . A. doing B. to do C. do D. done 查看更多

 

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To speak seems to be more difficult than _________.        
[     ]
A. doing    
B. to do    
C. do      
D. done

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To speak seems to be more difficult than ________.

[  ]

A.doing

B.to do

C.do

D.done

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