He ________ the test , but he wasn' t careful enough .


  1. A.
    was able to pass
  2. B.
    must have passed
  3. C.
    could have passed
  4. D.
    can pass
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He ______ the test again, in which case, his mother will be very disappointed. 

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He ______ the test again, in which case, his mother will be very disappointed.

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. He ______ the test again, in which case, his mother will be very disappointed. 

A. might fail   B. must have failed  C. should fail      D. could have failed

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