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-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．a(chǎn)ll

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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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