-Which is more useful, listening or speaking? -I think of them are useful. A. none B. both C. all 查看更多

 

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— Which is more useful, listening or speaking?
— I think _____ of them are useful.

[     ]

A. none
B. both
C. all

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—Which is more useful, listening or speaking?

—I think _______ of them are useful.

A. none          B.both            C.all

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-Which is more useful, listening or speaking?

-I think ________ of them are useful.

[  ]

A.none

B.both

C.all

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