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.
6. The floor of the hall was covered by a carpet.
  A.  covered upon
  B.  covered with
  C.  covered in
  D.  no improvement
7. He is so handsome man that people turn round to look at him.
  A.  too handsome
  B.  such a handsome
  C.  very handsome
  D.  no improvement

8. I have been working on this job for the last ten years.
  A.  would be working
  B.  am working
  C.  have been worked
  D.  no correction
9. He has been living in Chennai since the last two years.
  A.  from
  B.  for
  C.  ever since
  D.  since about
10. A good house has been alloted to him.
  A.  aloted
  B.  allotted
  C.  alotted
  D.  no improvement