Sentence Improvement

DIRECTIONS : In each question, a part of sentence is printed italics. Below each sentence, some phrases are given which can substtute the italicised part of the sentence.
31. The mother has not seen the child for several months and now eagerly looks forward to seeing him.
  A.  looks for
  B.  looks onto
  C.  looks ahead to
  D.  no improvement
32. He gave witness at the sensational trial.
  A.  evidence
  B.  proof
  C.  advice
  D.  no improvement

33. Twenty kilometres are not a great distance in these days of fast moving vehicles.
  A.  is no distance
  B.  aren't a great distance
  C.  is not a great distance
  D.  no improvement
34. He was selected for the job because he has very good command on English.
  A.  of
  B.  over
  C.  in
  D.  no improvement
35. Galileo escaped burning for heresy because he apologized and withdrew his previous statements.
  A.  being burnt
  B.  from being burnt
  C.  from having been burnt
  D.  no improvement