A computer ________ think for itself; it must be told what to do.

1. A.
   can't
2. B.
   couldn't
3. C.
   may not
4. D.
   might not

A computer _____ think for itself, it must be told what to do.

A. can’t 　 B. couldn’t　 C. may not 　 D. might not

A computer _____ think for itself; it must be told what to do.

1. A.
   can’t
2. B.
   wouldn’t
3. C.
   mustn’t
4. D.
   may not

A computer _____ think for itself; it must be told what to do.

A. can’t   B. wouldn’t    C. mustn’t      D. may not