31. several times, but he still doesn’t know to do it properly. A.Being shown B.Having shown C.Having been shown D.I’ve shown him 查看更多

 

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       several times, but he still doesn’t know to do it properly.

A.Being shown                                       B.Having shown

C.Having been shown                              D.I’ve shown him

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________ several times, but he still doesn't know how to do it properly.


  1. A.
    Being shown
  2. B.
    Having shown
  3. C.
    Having been shown
  4. D.
    I've shown him

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            several times, but he still doesn’t know how to do it properly.

A.Being shown                                              B.Having shown     

C.Having been shown                      D.I’ve shown him

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________ several times, but he still doesn't know how to do it properly.

[  ]

A.Being shown
B.Having shown
C.Though he has been shown
D.I've shown him

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________ several times, but he still doesn't know how to do it properly.

[  ]

A.Being shown

B.Having shown

C.Having been shown

D.I've shown him

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